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Как написать функцию для квадрата суммы двух чисел в JavaScript — Q&A Хекслет
2026-02-26 16:50 Diff
https://ru.hexlet.io/qna/javascript/questions/kak-napisat-funktsiyu-dlya-kvadrata-summy-dvuh-chisel-v-javascript
Чтобы написать такую функцию, нужно понимать два момента:
Синтаксис функции в JavaScript Правильное определение стрелочной функции выглядит так:

Обратите внимание на круглые скобки вокруг аргументов (a, b) и на оператор return, если используете фигурные скобки. Если фигурных скобок нет, return можно опустить:
Формула квадрата суммы Из алгебры знаем, что:
(a + b)² = a² + 2*a*b + b²
В JavaScript возведение в квадрат можно делать через оператор **:
Пример готовой функции:
Если хочется более буквально "квадрат суммы", можно просто сложить числа и возвести результат в квадрат:
Обе реализации корректны, но в учебных задачах часто просят явно использовать формулу a² + 2ab + b², чтобы закрепить знание алгебры и операторов JS.
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<div id="app" data-page="{&quot;component&quot;:&quot;web/qna/questions/show&quot;,&quot;props&quot;:{&quot;errors&quot;:{},&quot;locale&quot;:&quot;ru&quot;,&quot;language&quot;:&quot;ru&quot;,&quot;httpsHost&quot;:&quot;https://ru.hexlet.io&quot;,&quot;host&quot;:&quot;ru.hexlet.io&quot;,&quot;colorScheme&quot;:&quot;light&quot;,&quot;auth&quot;:{&quot;user&quot;:{&quot;id&quot;:null,&quot;last_viewed_notification_id&quot;:null,&quot;email&quot;:null,&quot;state&quot;:null,&quot;first_name&quot;:&quot;&quot;,&quot;last_name&quot;:&quot;&quot;,&quot;created_at&quot;:&quot;2026-02-26T16:50:15.514Z&quot;,&quot;current_program&quot;:null,&quot;current_team&quot;:null,&quot;full_name&quot;:&quot;&quot;,&quot;guest&quot;:true,&quot;can_use_paid_features&quot;:false,&quot;is_hexlet_employee&quot;:false,&quot;sanitized_phone_number&quot;:&quot;&quot;,&quot;can_subscribe&quot;:true,&quot;can_renew_education&quot;:false}},&quot;cloudflareTurnstileSiteKey&quot;:&quot;0x4AAAAAAA15KmeFXzd2H0Xo&quot;,&quot;vkIdClientId&quot;:&quot;51586979&quot;,&quot;yandexIdClientId&quot;:&quot;88d071f1d3384eb4bd1deb37910235c7&quot;,&quot;formAuthToken&quot;:&quot;Suenaz_5MRQiN2xwV50eRCSil9wNCTUK0ijkzBxALZqlNmxczYecdJR0SOhbku4z5Ku6dgU-y6hvyH6YTkfK9A&quot;,&quot;category&quot;:{&quot;id&quot;:2,&quot;title&quot;:&quot;JavaScript&quot;,&quot;slug&quot;:&quot;javascript&quot;,&quot;questions_count&quot;:852,&quot;locale&quot;:&quot;ru&quot;},&quot;mainStackCategory&quot;:null,&quot;answerDto&quot;:{&quot;id&quot;:null,&quot;body&quot;:&quot;&quot;,&quot;meta&quot;:{&quot;model&quot;:&quot;question_answer&quot;,&quot;relations&quot;:{}}},&quot;question&quot;:{&quot;creator&quot;:{&quot;id&quot;:104929,&quot;email&quot;:&quot;feycot@gmail.com&quot;,&quot;first_name&quot;:&quot;Nikolai&quot;,&quot;last_name&quot;:&quot;Gagarinov&quot;,&quot;telegram&quot;:&quot;&quot;,&quot;full_name&quot;:&quot;Nikolai Gagarinov&quot;,&quot;removed&quot;:false},&quot;category&quot;:{&quot;id&quot;:2,&quot;title&quot;:&quot;JavaScript&quot;,&quot;slug&quot;:&quot;javascript&quot;,&quot;questions_count&quot;:852,&quot;locale&quot;:&quot;ru&quot;},&quot;tags&quot;:[],&quot;id&quot;:6104,&quot;answers_count&quot;:1,&quot;slug&quot;:&quot;kak-napisat-funktsiyu-dlya-kvadrata-summy-dvuh-chisel-v-javascript&quot;,&quot;state&quot;:&quot;published&quot;,&quot;title&quot;:&quot;Как написать функцию для квадрата суммы двух чисел в JavaScript&quot;,&quot;created_at&quot;:&quot;2025-11-14T14:16:32.980Z&quot;,&quot;details&quot;:&quot;\nНужно реализовать функцию `squareOfSum()`, которая принимает два числа и возвращает квадрат их суммы, используя формулу алгебры:\n\n```text\n(a + b)² = a² + 2*a*b + b²\n```\n\nКак это правильно сделать в JavaScript и как не допустить ошибок в синтаксисе?\n&quot;,&quot;best_answer_id&quot;:null,&quot;related_stacks_count&quot;:0},&quot;answers&quot;:[{&quot;user&quot;:{&quot;id&quot;:104929,&quot;email&quot;:&quot;feycot@gmail.com&quot;,&quot;first_name&quot;:&quot;Nikolai&quot;,&quot;last_name&quot;:&quot;Gagarinov&quot;,&quot;telegram&quot;:&quot;&quot;,&quot;full_name&quot;:&quot;Nikolai Gagarinov&quot;,&quot;removed&quot;:false},&quot;question&quot;:{&quot;creator&quot;:{&quot;id&quot;:104929,&quot;email&quot;:&quot;feycot@gmail.com&quot;,&quot;first_name&quot;:&quot;Nikolai&quot;,&quot;last_name&quot;:&quot;Gagarinov&quot;,&quot;telegram&quot;:&quot;&quot;,&quot;full_name&quot;:&quot;Nikolai Gagarinov&quot;,&quot;removed&quot;:false},&quot;category&quot;:{&quot;id&quot;:2,&quot;title&quot;:&quot;JavaScript&quot;,&quot;slug&quot;:&quot;javascript&quot;,&quot;questions_count&quot;:852,&quot;locale&quot;:&quot;ru&quot;},&quot;tags&quot;:[],&quot;id&quot;:6104,&quot;answers_count&quot;:1,&quot;slug&quot;:&quot;kak-napisat-funktsiyu-dlya-kvadrata-summy-dvuh-chisel-v-javascript&quot;,&quot;state&quot;:&quot;published&quot;,&quot;title&quot;:&quot;Как написать функцию для квадрата суммы двух чисел в JavaScript&quot;,&quot;created_at&quot;:&quot;2025-11-14T14:16:32.980Z&quot;,&quot;details&quot;:&quot;\nНужно реализовать функцию `squareOfSum()`, которая принимает два числа и возвращает квадрат их суммы, используя формулу алгебры:\n\n```text\n(a + b)² = a² + 2*a*b + b²\n```\n\nКак это правильно сделать в JavaScript и как не допустить ошибок в синтаксисе?\n&quot;,&quot;best_answer_id&quot;:null,&quot;related_stacks_count&quot;:0},&quot;id&quot;:5143,&quot;state&quot;:&quot;active&quot;,&quot;body&quot;:&quot;\nЧтобы написать такую функцию, нужно понимать два момента:\n\n1. **Синтаксис функции в JavaScript**\n    Правильное определение стрелочной функции выглядит так:\n\n    ```javascript\n    const squareOfSum = (a, b) =&gt; {\n      return /* выражение */;\n    };\n    ```\n\n    Обратите внимание на круглые скобки вокруг аргументов `(a, b)` и на оператор `return`, если используете фигурные скобки. Если фигурных скобок нет, `return` можно опустить:\n\n    ```javascript\n    const squareOfSum = (a, b) =&gt; (a * a) + (2 * a * b) + (b * b);\n    ```\n\n2. **Формула квадрата суммы**\n    Из алгебры знаем, что:\n\n    ```\n    (a + b)² = a² + 2*a*b + b²\n    ```\n\n    В JavaScript возведение в квадрат можно делать через оператор `**`:\n\n    ```javascript\n    a ** 2  // a в квадрате\n    b ** 2  // b в квадрате\n    ```\n\nПример готовой функции:\n\n```javascript\nconst squareOfSum = (a, b) =&gt; (a ** 2) + (2 * a * b) + (b ** 2);\n\n// Использование\nconsole.log(squareOfSum(2, 3)); // 25\n```\n\nЕсли хочется более буквально \&quot;квадрат суммы\&quot;, можно просто сложить числа и возвести результат в квадрат:\n\n```javascript\nconst squareOfSum = (a, b) =&gt; (a + b) ** 2;\nconsole.log(squareOfSum(2, 3)); // 25\n```\n\nОбе реализации корректны, но в учебных задачах часто просят явно использовать формулу `a² + 2ab + b²`, чтобы закрепить знание алгебры и операторов JS.\n&quot;,&quot;votes_up_count&quot;:0,&quot;votes_down_count&quot;:0,&quot;created_at&quot;:&quot;2025-11-14T14:16:57.343Z&quot;,&quot;user_id&quot;:104929,&quot;category_slug&quot;:&quot;javascript&quot;}],&quot;relatedQuestions&quot;:[{&quot;creator&quot;:{&quot;id&quot;:104929,&quot;email&quot;:&quot;feycot@gmail.com&quot;,&quot;first_name&quot;:&quot;Nikolai&quot;,&quot;last_name&quot;:&quot;Gagarinov&quot;,&quot;telegram&quot;:&quot;&quot;,&quot;full_name&quot;:&quot;Nikolai Gagarinov&quot;,&quot;removed&quot;:false},&quot;category&quot;:{&quot;id&quot;:2,&quot;title&quot;:&quot;JavaScript&quot;,&quot;slug&quot;:&quot;javascript&quot;,&quot;questions_count&quot;:852,&quot;locale&quot;:&quot;ru&quot;},&quot;tags&quot;:[],&quot;id&quot;:6103,&quot;answers_count&quot;:1,&quot;slug&quot;:&quot;oshibka-cannot-read-property-touppercase-of-undefined-v-javascript&quot;,&quot;state&quot;:&quot;published&quot;,&quot;title&quot;:&quot;Ошибка Cannot read property &#x27;toUpperCase&#x27; of undefined в JavaScript&quot;,&quot;created_at&quot;:&quot;2025-11-14T14:13:39.020Z&quot;,&quot;details&quot;:&quot;При вызове функции:\n\n```javascript\nexport const toUpperCase = str =&gt; str.toUpperCase();\n```\n\nпоявляется ошибка:\n\n```text\nTypeError: Cannot read property &#x27;toUpperCase&#x27; of undefined\n```\n\nХотя я передаю строку в функцию, иногда возникает `undefined`. Почему так происходит и как это исправить?\n&quot;,&quot;best_answer_id&quot;:null,&quot;related_stacks_count&quot;:0},{&quot;creator&quot;:{&quot;id&quot;:104929,&quot;email&quot;:&quot;feycot@gmail.com&quot;,&quot;first_name&quot;:&quot;Nikolai&quot;,&quot;last_name&quot;:&quot;Gagarinov&quot;,&quot;telegram&quot;:&quot;&quot;,&quot;full_name&quot;:&quot;Nikolai Gagarinov&quot;,&quot;removed&quot;:false},&quot;category&quot;:{&quot;id&quot;:2,&quot;title&quot;:&quot;JavaScript&quot;,&quot;slug&quot;:&quot;javascript&quot;,&quot;questions_count&quot;:852,&quot;locale&quot;:&quot;ru&quot;},&quot;tags&quot;:[],&quot;id&quot;:6098,&quot;answers_count&quot;:1,&quot;slug&quot;:&quot;pochemu-poyavlyaetsya-oshibka-syntaxerror-cannot-use-import-statement-outside-a-module-pri-zapuske-node-js-skripta&quot;,&quot;state&quot;:&quot;published&quot;,&quot;title&quot;:&quot;Почему появляется ошибка SyntaxError: Cannot use import statement outside a module при запуске Node.js скрипта?&quot;,&quot;created_at&quot;:&quot;2025-11-14T13:42:35.943Z&quot;,&quot;details&quot;:&quot;\nПри попытке запустить файл Node.js напрямую, который использует синтаксис ES6 модулей (`import/export`), появляется ошибка:\n\n```text\nSyntaxError: Cannot use import statement outside a module\n```\n\nИмпорт и экспорт в коде настроены правильно, но при запуске напрямую через `node src/bin/brain-games.js` код падает. Почему так происходит и как правильно запускать такой код?\n&quot;,&quot;best_answer_id&quot;:null,&quot;related_stacks_count&quot;:0},{&quot;creator&quot;:{&quot;id&quot;:104929,&quot;email&quot;:&quot;feycot@gmail.com&quot;,&quot;first_name&quot;:&quot;Nikolai&quot;,&quot;last_name&quot;:&quot;Gagarinov&quot;,&quot;telegram&quot;:&quot;&quot;,&quot;full_name&quot;:&quot;Nikolai Gagarinov&quot;,&quot;removed&quot;:false},&quot;category&quot;:{&quot;id&quot;:2,&quot;title&quot;:&quot;JavaScript&quot;,&quot;slug&quot;:&quot;javascript&quot;,&quot;questions_count&quot;:852,&quot;locale&quot;:&quot;ru&quot;},&quot;tags&quot;:[],&quot;id&quot;:6097,&quot;answers_count&quot;:1,&quot;slug&quot;:&quot;pochemu-a-1-ne-ravno-prosto-a-1-v-javascript&quot;,&quot;state&quot;:&quot;published&quot;,&quot;title&quot;:&quot;Почему a += 1 не равно просто a + 1 в JavaScript&quot;,&quot;created_at&quot;:&quot;2025-11-14T13:40:06.951Z&quot;,&quot;details&quot;:&quot;\nВ тесте встречается код:\n\n```javascript\nlet a = 5;\na -= 4;\na += 1;\nconsole.log(a);\n```\n\nПочему вывод будет `2`, а не `a + 1`? Чем отличается запись `a += 1` от просто `a + 1`?\n&quot;,&quot;best_answer_id&quot;:null,&quot;related_stacks_count&quot;:0},{&quot;creator&quot;:{&quot;id&quot;:104929,&quot;email&quot;:&quot;feycot@gmail.com&quot;,&quot;first_name&quot;:&quot;Nikolai&quot;,&quot;last_name&quot;:&quot;Gagarinov&quot;,&quot;telegram&quot;:&quot;&quot;,&quot;full_name&quot;:&quot;Nikolai Gagarinov&quot;,&quot;removed&quot;:false},&quot;category&quot;:{&quot;id&quot;:2,&quot;title&quot;:&quot;JavaScript&quot;,&quot;slug&quot;:&quot;javascript&quot;,&quot;questions_count&quot;:852,&quot;locale&quot;:&quot;ru&quot;},&quot;tags&quot;:[],&quot;id&quot;:6094,&quot;answers_count&quot;:1,&quot;slug&quot;:&quot;chto-znachit-oshibka-element-type-is-invalid-pri-renderinge-react-komponenta&quot;,&quot;state&quot;:&quot;published&quot;,&quot;title&quot;:&quot;Что значит ошибка Element type is invalid при рендеринге React-компонента&quot;,&quot;created_at&quot;:&quot;2025-11-14T13:17:17.345Z&quot;,&quot;details&quot;:&quot;\nПри попытке использовать компонент в React возникает ошибка:\n\n```text\nInvariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it&#x27;s defined in, or you might have mixed up default and named imports.\n```\n\nЧто означает эта ошибка и как правильно исправить импорт компонента?\n&quot;,&quot;best_answer_id&quot;:5133,&quot;related_stacks_count&quot;:0},{&quot;creator&quot;:{&quot;id&quot;:104929,&quot;email&quot;:&quot;feycot@gmail.com&quot;,&quot;first_name&quot;:&quot;Nikolai&quot;,&quot;last_name&quot;:&quot;Gagarinov&quot;,&quot;telegram&quot;:&quot;&quot;,&quot;full_name&quot;:&quot;Nikolai Gagarinov&quot;,&quot;removed&quot;:false},&quot;category&quot;:{&quot;id&quot;:2,&quot;title&quot;:&quot;JavaScript&quot;,&quot;slug&quot;:&quot;javascript&quot;,&quot;questions_count&quot;:852,&quot;locale&quot;:&quot;ru&quot;},&quot;tags&quot;:[],&quot;id&quot;:6078,&quot;answers_count&quot;:1,&quot;slug&quot;:&quot;kak-ispravit-oshibki-prav-dostupa-pri-npm-link-na-mac&quot;,&quot;state&quot;:&quot;published&quot;,&quot;title&quot;:&quot;Как исправить ошибки прав доступа при `npm link` на Mac?&quot;,&quot;created_at&quot;:&quot;2025-11-14T11:22:18.832Z&quot;,&quot;details&quot;:&quot;При попытке выполнить `npm link` на Mac появляется ошибка:\n\n```bash\nnpm ERR! Error: EACCES: permission denied, unlink &#x27;/usr/local/lib/node_modules/frontend-project-lvl1_rain&#x27;\n````\n\nКоманды через `sudo` работают, но хочется понять, какие права и владельца нужно задать папкам, чтобы `npm link` работал без `sudo`.&quot;,&quot;best_answer_id&quot;:5117,&quot;related_stacks_count&quot;:0}],&quot;relatedLandings&quot;:[]},&quot;url&quot;:&quot;/qna/javascript/questions/kak-napisat-funktsiyu-dlya-kvadrata-summy-dvuh-chisel-v-javascript&quot;,&quot;version&quot;:&quot;0b0c6d4ebbd40fd58630a0dd89cc25544ccdf24e&quot;,&quot;encryptHistory&quot;:false,&quot;clearHistory&quot;:false}"><style data-mantine-styles="true">:root, :host{--mantine-font-family: Arial, sans-serif;--mantine-font-family-headings: Arial, sans-serif;--mantine-heading-font-weight: normal;--mantine-radius-default: 0rem;--mantine-primary-color-filled: var(--mantine-color-indigo-filled);--mantine-primary-color-filled-hover: var(--mantine-color-indigo-filled-hover);--mantine-primary-color-light: 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Если фигурных скобок нет, `return` можно опустить:\n\n    ```javascript\n    const squareOfSum = (a, b) =&gt; (a * a) + (2 * a * b) + (b * b);\n    ```\n\n2. **Формула квадрата суммы**\n    Из алгебры знаем, что:\n\n    ```\n    (a + b)² = a² + 2*a*b + b²\n    ```\n\n    В JavaScript возведение в квадрат можно делать через оператор `**`:\n\n    ```javascript\n    a ** 2  // a в квадрате\n    b ** 2  // b в квадрате\n    ```\n\nПример готовой функции:\n\n```javascript\nconst squareOfSum = (a, b) =&gt; (a ** 2) + (2 * a * b) + (b ** 2);\n\n// Использование\nconsole.log(squareOfSum(2, 3)); // 25\n```\n\nЕсли хочется более буквально &quot;квадрат суммы&quot;, можно просто сложить числа и возвести результат в квадрат:\n\n```javascript\nconst squareOfSum = (a, b) =&gt; (a + b) ** 2;\nconsole.log(squareOfSum(2, 3)); // 25\n```\n\nОбе реализации корректны, но в учебных задачах часто просят явно использовать формулу `a² + 2ab + b²`, чтобы закрепить знание алгебры и операторов JS.\n","datePublished":"2025-11-14T14:16:57.343Z","upvoteCount":0,"author":{"@type":"Person","name":"Nikolai Gagarinov"},"url":"https://ru.hexlet.io/qna/javascript/questions/kak-napisat-funktsiyu-dlya-kvadrata-summy-dvuh-chisel-v-javascript#answer-5143"}]}}</script><div style="--container-size:var(--container-size-lg);margin-top:var(--mantine-spacing-xl);height:100%" class="m_7485cace mantine-Container-root" data-size="lg" data-strategy="block"><script type="application/ld+json">{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"position":1,"@type":"ListItem","item":{"@id":"/qna","name":"Вопросы и ответы"}},{"position":2,"@type":"ListItem","item":{"@id":"/qna/javascript/questions","name":"JavaScript"}},{"position":3,"@type":"ListItem","item":{"@id":"/qna/javascript/questions/kak-napisat-funktsiyu-dlya-kvadrata-summy-dvuh-chisel-v-javascript","name":"Как написать функцию для квадрата суммы двух чисел в JavaScript"}}]}</script><div style="margin-bottom:var(--mantine-spacing-xs)" class="m_8b3717df mantine-Breadcrumbs-root"><a style="--text-fz:var(--mantine-font-size-sm);--text-lh:var(--mantine-line-height-sm);white-space:normal;color:inherit" class="mantine-focus-auto m_849cf0da m_f678d540 mantine-Breadcrumbs-breadcrumb m_b6d8b162 mantine-Text-root mantine-Anchor-root" data-size="sm" data-underline="hover" href="/"><div style="color:inherit" class="m_4451eb3a mantine-Center-root"><svg xmlns="http://www.w3.org/2000/svg" width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-home-link "><path d="M20.085 11.085l-8.085 -8.085l-9 9h2v7a2 2 0 0 0 2 2h4.5"></path><path d="M9 21v-6a2 2 0 0 1 2 -2h2a2 2 0 0 1 1.807 1.143"></path><path d="M20 21a1 1 0 1 0 2 0a1 1 0 1 0 -2 0"></path><path d="M20 16a1 1 0 1 0 2 0a1 1 0 1 0 -2 0"></path><path d="M15 19a1 1 0 1 0 2 0a1 1 0 1 0 -2 0"></path><path d="M21 16l-5 3l5 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style="--text-fz:var(--mantine-font-size-sm);--text-lh:var(--mantine-line-height-sm);white-space:normal;color:var(--mantine-color-dimmed)" class="mantine-focus-auto m_f678d540 mantine-Breadcrumbs-breadcrumb m_b6d8b162 mantine-Text-root" data-size="sm">Как написать функцию для квадрата суммы двух чисел в JavaScript</p></div><style data-mantine-styles="inline">.__m__-_R_eub_{margin-bottom:var(--mantine-spacing-xs);}@media(min-width: 36em){.__m__-_R_eub_{margin-bottom:var(--mantine-spacing-xs);}}</style><div style="--group-gap:var(--mantine-spacing-md);--group-align:center;--group-justify:space-between;--group-wrap:wrap" class="m_4081bf90 mantine-Group-root __m__-_R_eub_"><style data-mantine-styles="inline">.__m__-_R_deub_{width:100%;}@media(min-width: 36em){.__m__-_R_deub_{width:70%;}}@media(min-width: 75em){.__m__-_R_deub_{width:75%;}}</style><div class="__m__-_R_deub_"><div style="--group-gap:var(--mantine-spacing-md);--group-align:center;--group-justify:start;--group-wrap:nowrap" class="m_4081bf90 mantine-Group-root"><h1 style="--title-fw:var(--mantine-h1-font-weight);--title-lh:var(--mantine-h1-line-height);--title-fz:var(--mantine-h1-font-size)" class="m_8a5d1357 mantine-Title-root" data-order="1">Как написать функцию для квадрата суммы двух чисел в JavaScript</h1></div></div></div><style data-mantine-styles="inline">.__m__-_R_iub_{--grid-gutter:var(--mantine-spacing-md);}</style><div class="m_410352e9 mantine-Grid-root __m__-_R_iub_"><div class="m_dee7bd2f mantine-Grid-inner"><style data-mantine-styles="inline">.__m__-_R_3diub_{--col-flex-grow:auto;--col-flex-basis:100%;--col-max-width:100%;}@media(min-width: 48em){.__m__-_R_3diub_{--col-flex-grow:auto;--col-flex-basis:83.33333333333334%;--col-max-width:83.33333333333334%;}}@media(min-width: 62em){.__m__-_R_3diub_{--col-flex-grow:auto;--col-flex-basis:66.66666666666667%;--col-max-width:66.66666666666667%;}}</style><div class="m_96bdd299 mantine-Grid-col __m__-_R_3diub_"><div style="--group-gap:var(--mantine-spacing-md);--group-align:center;--group-justify:flex-start;--group-wrap:wrap;margin-bottom:var(--mantine-spacing-lg)" class="m_4081bf90 mantine-Group-root"></div><div style="margin-bottom:var(--mantine-spacing-xs)" class="m_d08caa0 mantine-Typography-root"><p>Нужно реализовать функцию <code style="margin-bottom:var(--mantine-spacing-lg)" class="m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight m_e597c321 mantine-CodeHighlight-codeHighlight m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight">squareOfSum()</code>, которая принимает два числа и возвращает квадрат их суммы, используя формулу алгебры:</p>
<div style="margin-bottom:var(--mantine-spacing-lg)" class="m_e597c321 mantine-CodeHighlight-codeHighlight" dir="ltr"><div class="m_be7e9c9c mantine-CodeHighlight-controls"><button style="--ai-bg:transparent;--ai-hover:transparent;--ai-color:inherit;--ai-bd:none" class="mantine-focus-auto mantine-active m_d498bab7 mantine-CodeHighlight-control m_8d3f4000 mantine-ActionIcon-root m_87cf2631 mantine-UnstyledButton-root" data-variant="none" type="button" aria-label="Copy code"><span class="m_8d3afb97 mantine-ActionIcon-icon"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M8 8m0 2a2 2 0 0 1 2 -2h8a2 2 0 0 1 2 2v8a2 2 0 0 1 -2 2h-8a2 2 0 0 1 -2 -2z"></path><path d="M16 8v-2a2 2 0 0 0 -2 -2h-8a2 2 0 0 0 -2 2v8a2 2 0 0 0 2 2h2"></path></svg></span></button></div><div style="--scrollarea-scrollbar-size:calc(0.25rem * var(--mantine-scale));--sa-corner-width:0px;--sa-corner-height:0px" class="m_f744fd40 mantine-CodeHighlight-scrollarea m_d57069b5 mantine-ScrollArea-root" dir="ltr"><div style="overflow-x:hidden;overflow-y:hidden;overscroll-behavior-inline:none" class="m_c0783ff9 mantine-ScrollArea-viewport" data-scrollbars="xy"><div class="m_b1336c6 mantine-ScrollArea-content"><pre class="m_2c47c4fd mantine-CodeHighlight-pre" style="padding:0"><code class="m_5caae6d3 mantine-CodeHighlight-code">(a + b)² = a² + 2*a*b + b²</code></pre></div></div></div><button class="mantine-focus-auto m_c9378bc2 mantine-CodeHighlight-showCodeButton m_87cf2631 mantine-UnstyledButton-root" data-hidden="true" type="button">Expand code</button></div>
<p>Как это правильно сделать в JavaScript и как не допустить ошибок в синтаксисе?</p></div><div style="--group-gap:var(--mantine-spacing-md);--group-align:center;--group-justify:flex-start;--group-wrap:wrap;margin-bottom:var(--mantine-spacing-xl);font-size:var(--mantine-font-size-sm)" class="m_4081bf90 mantine-Group-root"><div style="--group-gap:calc(0.25rem * var(--mantine-scale));--group-align:center;--group-justify:flex-start;--group-wrap:wrap;margin-inline-start:auto" class="m_4081bf90 mantine-Group-root"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-calendar "><path d="M4 7a2 2 0 0 1 2 -2h12a2 2 0 0 1 2 2v12a2 2 0 0 1 -2 2h-12a2 2 0 0 1 -2 -2v-12"></path><path d="M16 3v4"></path><path d="M8 3v4"></path><path d="M4 11h16"></path><path d="M11 15h1"></path><path d="M12 15v3"></path></svg><p class="mantine-focus-auto m_b6d8b162 mantine-Text-root" data-inherit="true">3 месяца назад</p></div><div style="--group-gap:calc(0.25rem * var(--mantine-scale));--group-align:center;--group-justify:flex-start;--group-wrap:wrap" class="m_4081bf90 mantine-Group-root"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-user "><path d="M8 7a4 4 0 1 0 8 0a4 4 0 0 0 -8 0"></path><path d="M6 21v-2a4 4 0 0 1 4 -4h4a4 4 0 0 1 4 4v2"></path></svg><p class="mantine-focus-auto m_b6d8b162 mantine-Text-root" data-inherit="true">Nikolai Gagarinov</p></div></div><div role="link" tabindex="0" style="cursor:pointer"><button style="display:block;width:100%" class="mantine-focus-auto m_87cf2631 mantine-UnstyledButton-root" type="button" aria-label="Присоединяйтесь к нашему Telegram-сообществу"><div style="background-color:light-dark(var(--mantine-color-gray-1), var(--mantine-color-dark-6));margin-block:var(--mantine-spacing-xs)" class="m_e615b15f mantine-Card-root m_1b7284a3 mantine-Paper-root"><div style="--group-gap:var(--mantine-spacing-md);--group-align:center;--group-justify:flex-start;--group-wrap:wrap" class="m_4081bf90 mantine-Group-root"><div style="--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;margin-inline-end:auto;color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-brand-telegram "><path d="M15 10l-4 4l6 6l4 -16l-18 7l4 2l2 6l3 -4"></path></svg></div>Присоединяйтесь к нашему Telegram-сообществу</div></div></button></div><h2 style="--title-fw:var(--mantine-h2-font-weight);--title-lh:var(--mantine-h2-line-height);--title-fz:var(--mantine-h2-font-size);margin-block:var(--mantine-spacing-xl)" class="m_8a5d1357 mantine-Title-root" data-order="2">Ответы</h2><div style="margin-bottom:var(--mantine-spacing-xl);padding:var(--mantine-spacing-lg)" class="m_e615b15f mantine-Card-root m_1b7284a3 mantine-Paper-root" data-with-border="true" id="answer-5143"><div style="--group-gap:calc(1.125rem * var(--mantine-scale));--group-align:stretch;--group-justify:flex-start;--group-wrap:nowrap" class="m_4081bf90 mantine-Group-root"><div style="--stack-gap:var(--mantine-spacing-md);--stack-align:stretch;--stack-justify:flex-start;font-size:var(--mantine-font-size-h1);font-weight:lighter;text-align:center" class="m_6d731127 mantine-Stack-root">0<a style="color:inherit" class="mantine-focus-auto m_849cf0da m_b6d8b162 mantine-Text-root mantine-Anchor-root" data-underline="hover" href="/qna/javascript/questions/kak-napisat-funktsiyu-dlya-kvadrata-summy-dvuh-chisel-v-javascript/answers/5143/vote"><div style="--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-thumb-up "><path d="M7 11v8a1 1 0 0 1 -1 1h-2a1 1 0 0 1 -1 -1v-7a1 1 0 0 1 1 -1h3a4 4 0 0 0 4 -4v-1a2 2 0 0 1 4 0v5h3a2 2 0 0 1 2 2l-1 5a2 3 0 0 1 -2 2h-7a3 3 0 0 1 -3 -3"></path></svg></div></a></div><div style="--stack-gap:var(--mantine-spacing-md);--stack-align:stretch;--stack-justify:flex-start;width:100%;min-width:0rem" class="m_6d731127 mantine-Stack-root"><div style="margin-bottom:auto" class="m_d08caa0 mantine-Typography-root"><p>Чтобы написать такую функцию, нужно понимать два момента:</p>
<ol>
<li>
<p><strong>Синтаксис функции в JavaScript</strong>
Правильное определение стрелочной функции выглядит так:</p>
<div style="margin-bottom:var(--mantine-spacing-lg)" class="m_e597c321 mantine-CodeHighlight-codeHighlight" dir="ltr"><div class="m_be7e9c9c mantine-CodeHighlight-controls"><button style="--ai-bg:transparent;--ai-hover:transparent;--ai-color:inherit;--ai-bd:none" class="mantine-focus-auto mantine-active m_d498bab7 mantine-CodeHighlight-control m_8d3f4000 mantine-ActionIcon-root m_87cf2631 mantine-UnstyledButton-root" data-variant="none" type="button" aria-label="Copy code"><span class="m_8d3afb97 mantine-ActionIcon-icon"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M8 8m0 2a2 2 0 0 1 2 -2h8a2 2 0 0 1 2 2v8a2 2 0 0 1 -2 2h-8a2 2 0 0 1 -2 -2z"></path><path d="M16 8v-2a2 2 0 0 0 -2 -2h-8a2 2 0 0 0 -2 2v8a2 2 0 0 0 2 2h2"></path></svg></span></button></div><div style="--scrollarea-scrollbar-size:calc(0.25rem * var(--mantine-scale));--sa-corner-width:0px;--sa-corner-height:0px" class="m_f744fd40 mantine-CodeHighlight-scrollarea m_d57069b5 mantine-ScrollArea-root" dir="ltr"><div style="overflow-x:hidden;overflow-y:hidden;overscroll-behavior-inline:none" class="m_c0783ff9 mantine-ScrollArea-viewport" data-scrollbars="xy"><div class="m_b1336c6 mantine-ScrollArea-content"><pre class="m_2c47c4fd mantine-CodeHighlight-pre" style="padding:0"><code class="m_5caae6d3 mantine-CodeHighlight-code">const squareOfSum = (a, b) =&gt; {
  return /* выражение */;
};</code></pre></div></div></div><button class="mantine-focus-auto m_c9378bc2 mantine-CodeHighlight-showCodeButton m_87cf2631 mantine-UnstyledButton-root" data-hidden="true" type="button">Expand code</button></div>
<p>Обратите внимание на круглые скобки вокруг аргументов <code style="margin-bottom:var(--mantine-spacing-lg)" class="m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight m_e597c321 mantine-CodeHighlight-codeHighlight m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight">(a, b)</code> и на оператор <code style="margin-bottom:var(--mantine-spacing-lg)" class="m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight m_e597c321 mantine-CodeHighlight-codeHighlight m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight">return</code>, если используете фигурные скобки. Если фигурных скобок нет, <code style="margin-bottom:var(--mantine-spacing-lg)" class="m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight m_e597c321 mantine-CodeHighlight-codeHighlight m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight">return</code> можно опустить:</p>
<div style="margin-bottom:var(--mantine-spacing-lg)" class="m_e597c321 mantine-CodeHighlight-codeHighlight" dir="ltr"><div class="m_be7e9c9c mantine-CodeHighlight-controls"><button style="--ai-bg:transparent;--ai-hover:transparent;--ai-color:inherit;--ai-bd:none" class="mantine-focus-auto mantine-active m_d498bab7 mantine-CodeHighlight-control m_8d3f4000 mantine-ActionIcon-root m_87cf2631 mantine-UnstyledButton-root" data-variant="none" type="button" aria-label="Copy code"><span class="m_8d3afb97 mantine-ActionIcon-icon"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M8 8m0 2a2 2 0 0 1 2 -2h8a2 2 0 0 1 2 2v8a2 2 0 0 1 -2 2h-8a2 2 0 0 1 -2 -2z"></path><path d="M16 8v-2a2 2 0 0 0 -2 -2h-8a2 2 0 0 0 -2 2v8a2 2 0 0 0 2 2h2"></path></svg></span></button></div><div style="--scrollarea-scrollbar-size:calc(0.25rem * var(--mantine-scale));--sa-corner-width:0px;--sa-corner-height:0px" class="m_f744fd40 mantine-CodeHighlight-scrollarea m_d57069b5 mantine-ScrollArea-root" dir="ltr"><div style="overflow-x:hidden;overflow-y:hidden;overscroll-behavior-inline:none" class="m_c0783ff9 mantine-ScrollArea-viewport" data-scrollbars="xy"><div class="m_b1336c6 mantine-ScrollArea-content"><pre class="m_2c47c4fd mantine-CodeHighlight-pre" style="padding:0"><code class="m_5caae6d3 mantine-CodeHighlight-code">const squareOfSum = (a, b) =&gt; (a * a) + (2 * a * b) + (b * b);</code></pre></div></div></div><button class="mantine-focus-auto m_c9378bc2 mantine-CodeHighlight-showCodeButton m_87cf2631 mantine-UnstyledButton-root" data-hidden="true" type="button">Expand code</button></div>
</li>
<li>
<p><strong>Формула квадрата суммы</strong>
Из алгебры знаем, что:</p>
<code style="margin-bottom:var(--mantine-spacing-lg)" class="m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight m_e597c321 mantine-CodeHighlight-codeHighlight m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight">(a + b)² = a² + 2*a*b + b²</code>
<p>В JavaScript возведение в квадрат можно делать через оператор <code style="margin-bottom:var(--mantine-spacing-lg)" class="m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight m_e597c321 mantine-CodeHighlight-codeHighlight m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight">**</code>:</p>
<div style="margin-bottom:var(--mantine-spacing-lg)" class="m_e597c321 mantine-CodeHighlight-codeHighlight" dir="ltr"><div class="m_be7e9c9c mantine-CodeHighlight-controls"><button style="--ai-bg:transparent;--ai-hover:transparent;--ai-color:inherit;--ai-bd:none" class="mantine-focus-auto mantine-active m_d498bab7 mantine-CodeHighlight-control m_8d3f4000 mantine-ActionIcon-root m_87cf2631 mantine-UnstyledButton-root" data-variant="none" type="button" aria-label="Copy code"><span class="m_8d3afb97 mantine-ActionIcon-icon"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M8 8m0 2a2 2 0 0 1 2 -2h8a2 2 0 0 1 2 2v8a2 2 0 0 1 -2 2h-8a2 2 0 0 1 -2 -2z"></path><path d="M16 8v-2a2 2 0 0 0 -2 -2h-8a2 2 0 0 0 -2 2v8a2 2 0 0 0 2 2h2"></path></svg></span></button></div><div style="--scrollarea-scrollbar-size:calc(0.25rem * var(--mantine-scale));--sa-corner-width:0px;--sa-corner-height:0px" class="m_f744fd40 mantine-CodeHighlight-scrollarea m_d57069b5 mantine-ScrollArea-root" dir="ltr"><div style="overflow-x:hidden;overflow-y:hidden;overscroll-behavior-inline:none" class="m_c0783ff9 mantine-ScrollArea-viewport" data-scrollbars="xy"><div class="m_b1336c6 mantine-ScrollArea-content"><pre class="m_2c47c4fd mantine-CodeHighlight-pre" style="padding:0"><code class="m_5caae6d3 mantine-CodeHighlight-code">a ** 2  // a в квадрате
b ** 2  // b в квадрате</code></pre></div></div></div><button class="mantine-focus-auto m_c9378bc2 mantine-CodeHighlight-showCodeButton m_87cf2631 mantine-UnstyledButton-root" data-hidden="true" type="button">Expand code</button></div>
</li>
</ol>
<p>Пример готовой функции:</p>
<div style="margin-bottom:var(--mantine-spacing-lg)" class="m_e597c321 mantine-CodeHighlight-codeHighlight" dir="ltr"><div class="m_be7e9c9c mantine-CodeHighlight-controls"><button style="--ai-bg:transparent;--ai-hover:transparent;--ai-color:inherit;--ai-bd:none" class="mantine-focus-auto mantine-active m_d498bab7 mantine-CodeHighlight-control m_8d3f4000 mantine-ActionIcon-root m_87cf2631 mantine-UnstyledButton-root" data-variant="none" type="button" aria-label="Copy code"><span class="m_8d3afb97 mantine-ActionIcon-icon"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M8 8m0 2a2 2 0 0 1 2 -2h8a2 2 0 0 1 2 2v8a2 2 0 0 1 -2 2h-8a2 2 0 0 1 -2 -2z"></path><path d="M16 8v-2a2 2 0 0 0 -2 -2h-8a2 2 0 0 0 -2 2v8a2 2 0 0 0 2 2h2"></path></svg></span></button></div><div style="--scrollarea-scrollbar-size:calc(0.25rem * var(--mantine-scale));--sa-corner-width:0px;--sa-corner-height:0px" class="m_f744fd40 mantine-CodeHighlight-scrollarea m_d57069b5 mantine-ScrollArea-root" dir="ltr"><div style="overflow-x:hidden;overflow-y:hidden;overscroll-behavior-inline:none" class="m_c0783ff9 mantine-ScrollArea-viewport" data-scrollbars="xy"><div class="m_b1336c6 mantine-ScrollArea-content"><pre class="m_2c47c4fd mantine-CodeHighlight-pre" style="padding:0"><code class="m_5caae6d3 mantine-CodeHighlight-code">const squareOfSum = (a, b) =&gt; (a ** 2) + (2 * a * b) + (b ** 2);

// Использование
console.log(squareOfSum(2, 3)); // 25</code></pre></div></div></div><button class="mantine-focus-auto m_c9378bc2 mantine-CodeHighlight-showCodeButton m_87cf2631 mantine-UnstyledButton-root" data-hidden="true" type="button">Expand code</button></div>
<p>Если хочется более буквально &quot;квадрат суммы&quot;, можно просто сложить числа и возвести результат в квадрат:</p>
<div style="margin-bottom:var(--mantine-spacing-lg)" class="m_e597c321 mantine-CodeHighlight-codeHighlight" dir="ltr"><div class="m_be7e9c9c mantine-CodeHighlight-controls"><button style="--ai-bg:transparent;--ai-hover:transparent;--ai-color:inherit;--ai-bd:none" class="mantine-focus-auto mantine-active m_d498bab7 mantine-CodeHighlight-control m_8d3f4000 mantine-ActionIcon-root m_87cf2631 mantine-UnstyledButton-root" data-variant="none" type="button" aria-label="Copy code"><span class="m_8d3afb97 mantine-ActionIcon-icon"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M8 8m0 2a2 2 0 0 1 2 -2h8a2 2 0 0 1 2 2v8a2 2 0 0 1 -2 2h-8a2 2 0 0 1 -2 -2z"></path><path d="M16 8v-2a2 2 0 0 0 -2 -2h-8a2 2 0 0 0 -2 2v8a2 2 0 0 0 2 2h2"></path></svg></span></button></div><div style="--scrollarea-scrollbar-size:calc(0.25rem * var(--mantine-scale));--sa-corner-width:0px;--sa-corner-height:0px" class="m_f744fd40 mantine-CodeHighlight-scrollarea m_d57069b5 mantine-ScrollArea-root" dir="ltr"><div style="overflow-x:hidden;overflow-y:hidden;overscroll-behavior-inline:none" class="m_c0783ff9 mantine-ScrollArea-viewport" data-scrollbars="xy"><div class="m_b1336c6 mantine-ScrollArea-content"><pre class="m_2c47c4fd mantine-CodeHighlight-pre" style="padding:0"><code class="m_5caae6d3 mantine-CodeHighlight-code">const squareOfSum = (a, b) =&gt; (a + b) ** 2;
console.log(squareOfSum(2, 3)); // 25</code></pre></div></div></div><button class="mantine-focus-auto m_c9378bc2 mantine-CodeHighlight-showCodeButton m_87cf2631 mantine-UnstyledButton-root" data-hidden="true" type="button">Expand code</button></div>
<p>Обе реализации корректны, но в учебных задачах часто просят явно использовать формулу <code style="margin-bottom:var(--mantine-spacing-lg)" class="m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight m_e597c321 mantine-CodeHighlight-codeHighlight m_dfe9c588 mantine-InlineCodeHighlight-inlineCodeHighlight">a² + 2ab + b²</code>, чтобы закрепить знание алгебры и операторов JS.</p></div><div class="m_3eebeb36 mantine-Divider-root" data-orientation="horizontal" role="separator"></div><div style="--group-gap:var(--mantine-spacing-md);--group-align:center;--group-justify:flex-start;--group-wrap:wrap;font-size:var(--mantine-font-size-sm)" class="m_4081bf90 mantine-Group-root"><div style="--group-gap:var(--mantine-spacing-xs);--group-align:center;--group-justify:flex-start;--group-wrap:wrap;margin-inline-start:auto" class="m_4081bf90 mantine-Group-root"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-calendar "><path d="M4 7a2 2 0 0 1 2 -2h12a2 2 0 0 1 2 2v12a2 2 0 0 1 -2 2h-12a2 2 0 0 1 -2 -2v-12"></path><path d="M16 3v4"></path><path d="M8 3v4"></path><path d="M4 11h16"></path><path d="M11 15h1"></path><path d="M12 15v3"></path></svg><p class="mantine-focus-auto m_b6d8b162 mantine-Text-root" data-inherit="true">3 месяца назад</p></div><div style="--group-gap:var(--mantine-spacing-xs);--group-align:center;--group-justify:flex-start;--group-wrap:wrap" class="m_4081bf90 mantine-Group-root"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-user "><path d="M8 7a4 4 0 1 0 8 0a4 4 0 0 0 -8 0"></path><path d="M6 21v-2a4 4 0 0 1 4 -4h4a4 4 0 0 1 4 4v2"></path></svg><p class="mantine-focus-auto m_b6d8b162 mantine-Text-root" data-inherit="true">Nikolai Gagarinov</p></div></div></div></div></div></div><style data-mantine-styles="inline">.__m__-_R_5diub_{--col-flex-grow:auto;--col-flex-basis:100%;--col-max-width:100%;}@media(min-width: 48em){.__m__-_R_5diub_{--col-flex-grow:auto;--col-flex-basis:16.666666666666668%;--col-max-width:16.666666666666668%;}}@media(min-width: 62em){.__m__-_R_5diub_{--col-flex-grow:auto;--col-flex-basis:33.333333333333336%;--col-max-width:33.333333333333336%;}}</style><div class="m_96bdd299 mantine-Grid-col __m__-_R_5diub_ mantine-visible-from-md"><div style="margin-bottom:var(--mantine-spacing-xl);padding:var(--mantine-spacing-xl);background:var(--mantine-color-blue-0);width:100%" class="m_e615b15f mantine-Card-root m_1b7284a3 mantine-Paper-root"><p style="margin-bottom:var(--mantine-spacing-sm);font-size:var(--mantine-font-size-h4)" class="mantine-focus-auto m_b6d8b162 mantine-Text-root">Похожие вопросы</p><ul class="m_abbac491 mantine-List-root"><li style="margin-bottom:var(--mantine-spacing-xs)" class="m_abb6bec2 mantine-List-item" data-with-icon="true"><div class="m_75cd9f71 mantine-List-itemWrapper"><span class="m_60f83e5b mantine-List-itemIcon"><div class="m_4451eb3a mantine-Center-root"><div style="--ti-size:var(--ti-size-xs);--ti-bg:transparent;--ti-color:var(--mantine-color-indigo-light-color);--ti-bd:calc(0.0625rem * var(--mantine-scale)) solid transparent;color:inherit" class="m_7341320d mantine-ThemeIcon-root" data-variant="transparent" data-size="xs"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="tabler-icon tabler-icon-chevron-compact-right "><path d="M11 4l3 8l-3 8"></path></svg></div></div></span><span class="mantine-List-itemLabel"><a class="mantine-focus-auto m_849cf0da m_b6d8b162 mantine-Text-root mantine-Anchor-root" data-underline="hover" href="/qna/javascript/questions/oshibka-cannot-read-property-touppercase-of-undefined-v-javascript">Ошибка Cannot read property &#x27;toUpperCase&#x27; 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