You need to use the tags you learned in the chapter on text markup. Follow the example and choose the appropriate text tags.
This additional version of the challenge is designed to reinforce your text markup skills.
Solution
The solution to the challenge will be available in a few minutes. Use it if you encounter difficulties. In the meantime, try to complete the challenge on your own.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Mathematical Formulas</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<h1>Mathematical Formulas</h1>
<p>
The formula for the area of a square: a<sup>2</sup>. The square root of number b is written as √b.
</p>
<p>
In algebra, indices are also used: x<sub>1</sub>, x<sub>2</sub> are the roots of the equation.
</p>
</body>
</html>
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Artwork</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/61-challenge">2. Text Markup, Mastery Challenge 1</a></li><li class="main-nav__course-contents-item main-nav__course-contents-item--current"><a href="/courses/html-css-basics/text-markup/62-challenge">3. Text Markup, Mastery Challenge 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/63-challenge">4. Text Markup, Mastery Challenge 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/64-challenge">5. Text Markup, Mastery Challenge 4</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/65-challenge">6. Text Markup, Mastery Challenge 5</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/recipe-markup">7. Marking up a recipe</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/73-challenge">8. Text Markup, Mastery Challenge 8</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/75-challenge">9. Text Markup, Mastery Challenge 10</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/74-challenge">10. Text Markup, Mastery Challenge 9</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/71-challenge">11. Text Markup, Mastery Challenge 6</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/72-challenge">12. Text Markup, Mastery Challenge 7</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/shopping-list">13. Multi-level shopping list</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/strange-formula">14. Strange formula</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/eternal-revisions">15. Eternal revisions</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/81-challenge">16. Text Markup, Hardcore Mastery Challenge 1</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/82-challenge">17. Text Markup, Hardcore Mastery Challenge 2</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/83-challenge">18. Text Markup, Hardcore Mastery Challenge 3</a></li><li class="main-nav__course-contents-item"><a href="/courses/html-css-basics/text-markup/84-challenge">19. 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Text Markup, Hardcore Mastery Challenge 5</a></li></ul></div></div><a class="main-nav__course-item main-nav__course-button main-nav__course-button--next" href="/courses/html-css-basics/text-markup/63-challenge">Text Markup, Mastery Challenge 3</a></div><ul class="main-nav__list main-nav__list--user main-nav__list--user-guest"><li class="main-nav__item" itemprop="name"><a class="main-nav__link" href="/signup?redirect_url=%2Fcourses%2Fhtml-css-basics%2Ftext-markup%2F62-challenge" title="Sign up" data-modal="open" data-value="register" itemprop="url"><span class="main-nav__icon" aria-hidden="true"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#user"></use></svg></span>Sign up</a></li><li class="main-nav__item main-nav__item--login" itemprop="name"><a class="main-nav__link" href="/login?redirect_url=%2Fcourses%2Fhtml-css-basics%2Ftext-markup%2F62-challenge" title="Log in" data-modal="open" data-value="login" itemprop="url"><span class="main-nav__icon" aria-hidden="true"><svg aria-hidden="true"><use xlink:href="/img/sprites/general.svg#login"></use></svg></span>Log in</a></li></ul></nav></div></div></header><main class="course-container course-interface__content js-course"><div class="course-container__inner"><article class="course-layout"><div class="course-layout__sidebar course-theory"><div class="course-theory__inner course-theory__inner--left-stub"><button class="course-theory__close icon-close icon-close--light" type="button" title="Close">Close</button><ul class="course-tabs course-tabs--non-interactive course-layout__theory-heading"><li class="course-tabs__item course-tabs__item--external course-tab course-tab--centered"><span class="course-tab__icon"><svg aria-hidden="true"><use xlink:href="courses#icon-theory"></use></svg></span><span class="course-tab__title">Theory</span></li><li class="course-tabs__item course-tabs__item--internal course-tab course-tab--centered course-tab--active"><span class="course-tab__icon"><svg aria-hidden="true"><use xlink:href="courses#icon-theory"></use></svg></span><span class="course-tab__title">Theory</span></li></ul><section class="course-theory__content"><div class="course-theory__content-inner"><h1 class="course-theory__content-heading">Text Markup, Mastery Challenge 2</h1><div class="course-theory__content-text"><p>You need to use the tags you learned in the chapter on <a href="/courses/html-css-basics/text-markup">text markup</a>. Follow the example and choose the appropriate text tags.</p><p class="info info--frame-heading info--frame-heading--bytheway info--green">This additional version of the <a href="/courses/html-css-basics/text-markup/article-markup">challenge</a> is designed to reinforce your text markup skills.</p><p><strong>Solution</strong></p><p>The solution to the challenge will be available in a few minutes. Use it if you encounter difficulties. In the meantime, try to complete the challenge on your own.</p><div class="course-theory__timer"><div class="course-theory__timer-content course-theory__spoiler course-theory__spoiler--collapsed"><button class="course-theory__spoiler-switch" type="button">Show solution</button><pre class="course-theory__spoiler-content"><code><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Mathematical Formulas</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<h1>Mathematical Formulas</h1>
<p>
The formula for the area of a square: a<sup>2</sup>. The square root of number b is written as √b.
</p>
<p>
In algebra, indices are also used: x<sub>1</sub>, x<sub>2</sub> are the roots of the equation.
</p>
</body>
</html></code></pre></div></div></div></div></section><div class="course-theory__controls"><button class="button button--close" type="button">To the task</button></div></div></div><div class="course-layout__column"><ul class="course-tabs course-layout__course-tabs"><li class="course-tabs__item course-tabs__item--limited course-tabs__item--limited-large course-tab"><span class="course-tab__title">index.html</span></li></ul><div class="course-layout__editors"><div class="course-editor course-layout__editor"><span class="course-editor__label"><span class="course-editor__label-item">HTML</span></span><div class="course-editor__item" id="html"></div></div></div></div><div class="course-layout__column"><span class="course-separator-control"><svg aria-hidden="true"><use xlink:href="courses#icon-arrows-separator"></use></svg></span><div class="course-browser"><div class="course-browser__menu"><span class="course-browser__menu-item course-browser__address"><span class="course-browser__menu-item-inner">HTML</span></span><button class="js--autorun course-browser__menu-item course-browser__menu-button course-browser__menu-button--text-with-icon course-browser__menu-button--autorun course-browser__menu-button--autorun-on" title="Autorun" type="button"><span class="course-browser__menu-item-inner"><svg aria-hidden="true"><use xlink:href="/img/sprites/courses.svg#icon-autorun"></use></svg>
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