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2 <p>Last updated on<strong>December 17, 2025</strong></p>
2 <p>Last updated on<strong>December 17, 2025</strong></p>
3 <p>We use the long division method to divide polynomials, where the dividend and divisor have no common factors. It is a frequently used method among all types of polynomials. A polynomial is an algebraic expression made of variables, coefficients, and terms. Long division can be used between pairs of monomials, polynomials, or between a monomial and a polynomial.</p>
3 <p>We use the long division method to divide polynomials, where the dividend and divisor have no common factors. It is a frequently used method among all types of polynomials. A polynomial is an algebraic expression made of variables, coefficients, and terms. Long division can be used between pairs of monomials, polynomials, or between a monomial and a polynomial.</p>
4 <h2>What is the Long Division of Polynomials?</h2>
4 <h2>What is the Long Division of Polynomials?</h2>
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5 <p>What Is Algebra? 🧮 | Simple Explanation with 🎯 Cool Examples for Kids | ✨BrightCHAMPS Math</p>
6 <p>▶</p>
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7 <p>There are three methods<a>of</a><a>dividing polynomials</a>:<a>division</a>by<a>monomial</a>method,<a>synthetic division</a>method and the<a>long division</a>method. In cases where the<a>dividend</a>and divisor do not share any common factors, this process helps in effective simplification. Long division of polynomials, similar to long division of numbers, has components like quotient, divisor, dividend, and remainder. </p>
7 <p>There are three methods<a>of</a><a>dividing polynomials</a>:<a>division</a>by<a>monomial</a>method,<a>synthetic division</a>method and the<a>long division</a>method. In cases where the<a>dividend</a>and divisor do not share any common factors, this process helps in effective simplification. Long division of polynomials, similar to long division of numbers, has components like quotient, divisor, dividend, and remainder. </p>
8 <h2>What are the Steps for Long Division of Polynomials?</h2>
8 <h2>What are the Steps for Long Division of Polynomials?</h2>
9 <p>While performing long<a>division of polynomials</a>, follow these steps:</p>
9 <p>While performing long<a>division of polynomials</a>, follow these steps:</p>
10 <p><strong>Step 1:</strong>If required, arrange both polynomials in<a>descending order</a>of<a>powers</a>.</p>
10 <p><strong>Step 1:</strong>If required, arrange both polynomials in<a>descending order</a>of<a>powers</a>.</p>
11 <p><strong>Step 2:</strong>Divide the first<a>term</a>of the dividend by the first term of the<a>divisor</a>. This gives you the first term of the<a>quotient</a>.</p>
11 <p><strong>Step 2:</strong>Divide the first<a>term</a>of the dividend by the first term of the<a>divisor</a>. This gives you the first term of the<a>quotient</a>.</p>
12 <p><strong>Step 3:</strong>Multiply the first term of the quotient by the divisor. Subtract the<a>product</a>from the dividend.</p>
12 <p><strong>Step 3:</strong>Multiply the first term of the quotient by the divisor. Subtract the<a>product</a>from the dividend.</p>
13 <p><strong>Step 4:</strong>Bring down the next term, if any</p>
13 <p><strong>Step 4:</strong>Bring down the next term, if any</p>
14 <p><strong>Step 5:</strong>Repeat the process till the remainder is zero or is of a lower degree than divisor. Then the long division process is complete. </p>
14 <p><strong>Step 5:</strong>Repeat the process till the remainder is zero or is of a lower degree than divisor. Then the long division process is complete. </p>
15 <h2>Long Division of Polynomial by Missing Terms</h2>
15 <h2>Long Division of Polynomial by Missing Terms</h2>
16 <p>There are times when there can be a missing term in the<a>expression</a>while performing long divisions. For example, in the<a>polynomial</a>2x4 + 5x2 - 3, the terms x3 and x are missing. In such cases, either the<a>coefficient</a>is written as zero or a gap is left in place of the coefficient. </p>
16 <p>There are times when there can be a missing term in the<a>expression</a>while performing long divisions. For example, in the<a>polynomial</a>2x4 + 5x2 - 3, the terms x3 and x are missing. In such cases, either the<a>coefficient</a>is written as zero or a gap is left in place of the coefficient. </p>
17 <p>Let's solve the given division problem (2x4 + 5x2 - 3) ÷ (x2 - 1)</p>
17 <p>Let's solve the given division problem (2x4 + 5x2 - 3) ÷ (x2 - 1)</p>
18 <p><strong>Step 1:</strong>Write the missing terms Dividend: 2x4 + 0x3 + 5x2 + 0x - 3 Divisor: x2 + 0x - 1</p>
18 <p><strong>Step 1:</strong>Write the missing terms Dividend: 2x4 + 0x3 + 5x2 + 0x - 3 Divisor: x2 + 0x - 1</p>
19 <p><strong>Step 2:</strong>Divide the leading terms</p>
19 <p><strong>Step 2:</strong>Divide the leading terms</p>
20 <p>\( \frac{2x^4}{x^2} = 2x^2 \)</p>
20 <p>\( \frac{2x^4}{x^2} = 2x^2 \)</p>
21 <p> <strong>Step 3:</strong>Multiply and subtract</p>
21 <p> <strong>Step 3:</strong>Multiply and subtract</p>
22 <p>Multiply: (x2 - 1) 2x2 = 2x4 - 2x2 Subtract: (2x4 + 0x3 + 5x2) - (2x4 + 0x3 - 2x2) = 0x4 + 0x3 + 7x2</p>
22 <p>Multiply: (x2 - 1) 2x2 = 2x4 - 2x2 Subtract: (2x4 + 0x3 + 5x2) - (2x4 + 0x3 - 2x2) = 0x4 + 0x3 + 7x2</p>
23 <p><strong>Step 4: </strong>Bring down: 0x - 3</p>
23 <p><strong>Step 4: </strong>Bring down: 0x - 3</p>
24 <p>Divide again: \({7x^2 \over x^2} = 7\) (x2 - 1) × 7 = 7x2 - 7 (7x2 + 0x - 3) - (7x2 + 0x - 7) = 0x2 + 0x + 4</p>
24 <p>Divide again: \({7x^2 \over x^2} = 7\) (x2 - 1) × 7 = 7x2 - 7 (7x2 + 0x - 3) - (7x2 + 0x - 7) = 0x2 + 0x + 4</p>
25 <p>The<a>remainder</a>has degree zero, which is<a>less than</a>the divisor's degree of 2.</p>
25 <p>The<a>remainder</a>has degree zero, which is<a>less than</a>the divisor's degree of 2.</p>
26 <p>So the final answer is: \(2x^2 + 7 + {4 \over x^2 - 1}\)</p>
26 <p>So the final answer is: \(2x^2 + 7 + {4 \over x^2 - 1}\)</p>
27 <p>Since the remainder is not zero, (x2 - 1) is not a<a>factor</a>. </p>
27 <p>Since the remainder is not zero, (x2 - 1) is not a<a>factor</a>. </p>
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30 <h2>Long Division of Polynomials by Monomials</h2>
29 <h2>Long Division of Polynomials by Monomials</h2>
31 <p>For dividing polynomials by monomials, note<a>common factors</a>between the<a>numerator and denominator</a>. Then split the expression and divide each term by the monomial individually. Simplify each term individually, then combine them for the final answer.</p>
30 <p>For dividing polynomials by monomials, note<a>common factors</a>between the<a>numerator and denominator</a>. Then split the expression and divide each term by the monomial individually. Simplify each term individually, then combine them for the final answer.</p>
32 <p>For example: Divide the polynomial: (6x3 + 9x2 - 12x) ÷ 3x</p>
31 <p>For example: Divide the polynomial: (6x3 + 9x2 - 12x) ÷ 3x</p>
33 <p><strong>Step 1:</strong>The expression as a<a>fraction</a>: \(\frac{6x^3 + 9x^2 - 12x} {{3x}}\)</p>
32 <p><strong>Step 1:</strong>The expression as a<a>fraction</a>: \(\frac{6x^3 + 9x^2 - 12x} {{3x}}\)</p>
34 <p> <strong>Step 2:</strong>Simplifying terms: </p>
33 <p> <strong>Step 2:</strong>Simplifying terms: </p>
35 <ul><li>\({6x^3 \over 3x} = 2x^2\) </li>
34 <ul><li>\({6x^3 \over 3x} = 2x^2\) </li>
36 <li>\({9x^2 \over 3x} = 3x\) </li>
35 <li>\({9x^2 \over 3x} = 3x\) </li>
37 <li>\({12x \over 3x} = 4x\) </li>
36 <li>\({12x \over 3x} = 4x\) </li>
38 </ul><p><strong>Step 3: </strong>Combining the simplified terms, we get the answer = 2x2 + 3x - 4</p>
37 </ul><p><strong>Step 3: </strong>Combining the simplified terms, we get the answer = 2x2 + 3x - 4</p>
39 <h2>Long Division of Polynomials by Other Monomial</h2>
38 <h2>Long Division of Polynomials by Other Monomial</h2>
40 <p>Here, the<a>denominator</a>is another monomial. The process of long division of a polynomial by another monomial is similar to the process mentioned above. List the<a>prime factors</a>of the<a>numerator</a>and denominator and cancel out all common factors.</p>
39 <p>Here, the<a>denominator</a>is another monomial. The process of long division of a polynomial by another monomial is similar to the process mentioned above. List the<a>prime factors</a>of the<a>numerator</a>and denominator and cancel out all common factors.</p>
41 <p>For example, divide the polynomial 45x4y2 + 30x2y by 15x2</p>
40 <p>For example, divide the polynomial 45x4y2 + 30x2y by 15x2</p>
42 <p> We split and simplify each term,</p>
41 <p> We split and simplify each term,</p>
43 <p>\({{45x^4 y^2} \over {15x^2}} + {{30x^3y} \over {15x^2}} \)</p>
42 <p>\({{45x^4 y^2} \over {15x^2}} + {{30x^3y} \over {15x^2}} \)</p>
44 <p>\( {{45x^4 y^2} \over {15x^2}} = {3x^2y^2} \)</p>
43 <p>\( {{45x^4 y^2} \over {15x^2}} = {3x^2y^2} \)</p>
45 <p>\( {{30x^3y} \over {15x^2}} = {2xy}\)</p>
44 <p>\( {{30x^3y} \over {15x^2}} = {2xy}\)</p>
46 <p>Combining the terms: 3x2y2 + 2xy </p>
45 <p>Combining the terms: 3x2y2 + 2xy </p>
47 <h2>Long Division of Polynomials by Binomials</h2>
46 <h2>Long Division of Polynomials by Binomials</h2>
48 <p>When there are no common factors between the numerator and denominator, long division by binomials is used. Let's understand the steps involved through an example:</p>
47 <p>When there are no common factors between the numerator and denominator, long division by binomials is used. Let's understand the steps involved through an example:</p>
49 <p>Question: Divide (4x2 + 8x + 5) by ( x + 2)</p>
48 <p>Question: Divide (4x2 + 8x + 5) by ( x + 2)</p>
50 <p><strong>Step 1:</strong>Divide the first term of the dividend by the divisor \({4x^2 \over x} = 4x \)</p>
49 <p><strong>Step 1:</strong>Divide the first term of the dividend by the divisor \({4x^2 \over x} = 4x \)</p>
51 <p> <strong>Step 2:</strong>Multiply the divisor by 4x (x + 2) (4x) = 4x2 + 8x</p>
50 <p> <strong>Step 2:</strong>Multiply the divisor by 4x (x + 2) (4x) = 4x2 + 8x</p>
52 <p><strong>Step 3:</strong>Subtracting from the dividend gives a new polynomial (4x2 + 8x + 5) - (4x2 + 8x) = 0x2 + 0x + 5 = 5 </p>
51 <p><strong>Step 3:</strong>Subtracting from the dividend gives a new polynomial (4x2 + 8x + 5) - (4x2 + 8x) = 0x2 + 0x + 5 = 5 </p>
53 <p><strong>Step 4:</strong>Bring down the next term, then continue the division process until complete. While dividing a polynomial, 4x² + 8x + 5 ÷ x + 2 → quotient 4x, remainder 5</p>
52 <p><strong>Step 4:</strong>Bring down the next term, then continue the division process until complete. While dividing a polynomial, 4x² + 8x + 5 ÷ x + 2 → quotient 4x, remainder 5</p>
54 <h2>Long Division of Polynomials by Other Polynomial</h2>
53 <h2>Long Division of Polynomials by Other Polynomial</h2>
55 <p>Long division of polynomials by other polynomials can be compared to the long division process of<a>numbers</a>. The process is similar to the above-mentioned process of long division of polynomials. Let's understand each step using an example:</p>
54 <p>Long division of polynomials by other polynomials can be compared to the long division process of<a>numbers</a>. The process is similar to the above-mentioned process of long division of polynomials. Let's understand each step using an example:</p>
56 <p><strong>Question:</strong>Divide the polynomials 8x3 + 10x2 - 6x + 5 ÷ x2 + 2x + 1</p>
55 <p><strong>Question:</strong>Divide the polynomials 8x3 + 10x2 - 6x + 5 ÷ x2 + 2x + 1</p>
57 <p><strong>Solution: </strong><strong>Step 1:</strong>Divide the first term of the dividend by the divisor</p>
56 <p><strong>Solution: </strong><strong>Step 1:</strong>Divide the first term of the dividend by the divisor</p>
58 <p>\({8x^3 \over x^2} = 8x\) </p>
57 <p>\({8x^3 \over x^2} = 8x\) </p>
59 <p><strong>Step 2:</strong>Multiply the divisor by 8x</p>
58 <p><strong>Step 2:</strong>Multiply the divisor by 8x</p>
60 <p> (8x) (x2 + 2x + 1) = 8x3 + 16x2 + 8x</p>
59 <p> (8x) (x2 + 2x + 1) = 8x3 + 16x2 + 8x</p>
61 <p><strong>Step 3:</strong>Subtract by dividend </p>
60 <p><strong>Step 3:</strong>Subtract by dividend </p>
62 <p> (8x3 + 10x2 - 6x + 5) - (8x3 + 16x2 + 8x)</p>
61 <p> (8x3 + 10x2 - 6x + 5) - (8x3 + 16x2 + 8x)</p>
63 <p> ⇒ (0x3 - 6x2 - 14x + 5)</p>
62 <p> ⇒ (0x3 - 6x2 - 14x + 5)</p>
64 <p><strong>Step 4:</strong>Repeat the process. \({{-6x^2} \over x^2} = -6\)</p>
63 <p><strong>Step 4:</strong>Repeat the process. \({{-6x^2} \over x^2} = -6\)</p>
65 <p>The next term of the quotient is -6</p>
64 <p>The next term of the quotient is -6</p>
66 <p>⇒ (-6) (x2 + 2x + 1) = -6x2 -12x -6</p>
65 <p>⇒ (-6) (x2 + 2x + 1) = -6x2 -12x -6</p>
67 <p>⇒ (-6x2 - 14x + 5) - (-6x2 - 12x -6)</p>
66 <p>⇒ (-6x2 - 14x + 5) - (-6x2 - 12x -6)</p>
68 <p>⇒ 0x2 - 2x + 11</p>
67 <p>⇒ 0x2 - 2x + 11</p>
69 <p>Dividing 8x3 + 10x2 - 6x + 5 ÷ x2 + 2x + 1, gives us quotient = 8x - 6 and remainder = -2x + 11</p>
68 <p>Dividing 8x3 + 10x2 - 6x + 5 ÷ x2 + 2x + 1, gives us quotient = 8x - 6 and remainder = -2x + 11</p>
70 <h2>Tips and Tricks to Master Long Division of Polynomials</h2>
69 <h2>Tips and Tricks to Master Long Division of Polynomials</h2>
71 <p>Long Division of Polynomials is a complex mathematical concept which can be quite difficult to understand. Therefore, mentioned below are some tips and tricks to master the topic.</p>
70 <p>Long Division of Polynomials is a complex mathematical concept which can be quite difficult to understand. Therefore, mentioned below are some tips and tricks to master the topic.</p>
72 <ul><li><strong>Always Arrange in Standard Form:</strong> Before dividing, write both the dividend and divisor in<a>descending</a>order of powers of 𝑥. </li>
71 <ul><li><strong>Always Arrange in Standard Form:</strong> Before dividing, write both the dividend and divisor in<a>descending</a>order of powers of 𝑥. </li>
73 <li><strong>Divide Only the Leading Terms:</strong> At each step, divide the first term of the dividend by the first term of the divisor and not the entire expression. </li>
72 <li><strong>Divide Only the Leading Terms:</strong> At each step, divide the first term of the dividend by the first term of the divisor and not the entire expression. </li>
74 <li><strong>Multiply Carefully:</strong>Always multiply the entire divisor by the new quotient term, using parentheses to avoid sign errors. </li>
73 <li><strong>Multiply Carefully:</strong>Always multiply the entire divisor by the new quotient term, using parentheses to avoid sign errors. </li>
75 <li><strong>Subtract with Attention to Signs: </strong>When subtracting, change every sign in the expression being subtracted. </li>
74 <li><strong>Subtract with Attention to Signs: </strong>When subtracting, change every sign in the expression being subtracted. </li>
76 <li><strong>Bring Down the Next Term: </strong>After<a>subtraction</a>, bring down the next term from the dividend before continuing. </li>
75 <li><strong>Bring Down the Next Term: </strong>After<a>subtraction</a>, bring down the next term from the dividend before continuing. </li>
77 <li><p><strong>Use Simple Examples First:</strong>Teachers can ask students to begin with lower-degree polynomials and gradually increase the difficulty level. </p>
76 <li><p><strong>Use Simple Examples First:</strong>Teachers can ask students to begin with lower-degree polynomials and gradually increase the difficulty level. </p>
78 </li>
77 </li>
79 <li><p><strong>Using the Division Algorithm:</strong>Parents can ask students to verify their solution by substituting it into the division algorithm: Dividend = (Divisor × Quotient) + Remainder. </p>
78 <li><p><strong>Using the Division Algorithm:</strong>Parents can ask students to verify their solution by substituting it into the division algorithm: Dividend = (Divisor × Quotient) + Remainder. </p>
80 </li>
79 </li>
81 <li><p><strong>Encourage Step-by-Step Work:</strong>Teachers can encourage students to write each step clearly and neatly. This helps students to avoid confusion and reduce careless mistakes.</p>
80 <li><p><strong>Encourage Step-by-Step Work:</strong>Teachers can encourage students to write each step clearly and neatly. This helps students to avoid confusion and reduce careless mistakes.</p>
82 </li>
81 </li>
83 </ul><h2>Common Mistakes and How to Avoid Them in Long Division of Polynomials</h2>
82 </ul><h2>Common Mistakes and How to Avoid Them in Long Division of Polynomials</h2>
84 <p>When performing long division of polynomials, it is possible to make errors. Some things to be aware of, to avoid incorrect results are:</p>
83 <p>When performing long division of polynomials, it is possible to make errors. Some things to be aware of, to avoid incorrect results are:</p>
85 <h2>Real-Life Applications of Long Division of Polynomials</h2>
84 <h2>Real-Life Applications of Long Division of Polynomials</h2>
86 <p>Long division of polynomials simplifies complex expressions. It helps break down<a>functions</a>for easier analysis.</p>
85 <p>Long division of polynomials simplifies complex expressions. It helps break down<a>functions</a>for easier analysis.</p>
87 <ul><li><strong>Simplifying physical phenomena</strong>: Long division helps simplify polynomial functions used in analyzing complex physical systems like projectile motion, electric circuits, or wave functions. </li>
86 <ul><li><strong>Simplifying physical phenomena</strong>: Long division helps simplify polynomial functions used in analyzing complex physical systems like projectile motion, electric circuits, or wave functions. </li>
88 </ul><ul><li><strong>Coding theory</strong>: Polynomial division is used in error detection and correction in coding. In cryptography, long division helps simplify expressions and find remainders in modular<a>arithmetic</a>.</li>
87 </ul><ul><li><strong>Coding theory</strong>: Polynomial division is used in error detection and correction in coding. In cryptography, long division helps simplify expressions and find remainders in modular<a>arithmetic</a>.</li>
89 </ul><ul><li><strong>Designing mechanical gear</strong>: Long division simplifies motion equations. It also helps determine relationships between moving parts.</li>
88 </ul><ul><li><strong>Designing mechanical gear</strong>: Long division simplifies motion equations. It also helps determine relationships between moving parts.</li>
90 </ul><ul><li><strong>Find economic trends</strong>: Polynomial functions model cost, revenue, and<a>profit</a>over time and across production units. The long division method helps find trends, break-even points or marginal costs and profits. </li>
89 </ul><ul><li><strong>Find economic trends</strong>: Polynomial functions model cost, revenue, and<a>profit</a>over time and across production units. The long division method helps find trends, break-even points or marginal costs and profits. </li>
91 </ul><ul><li><strong>Predicting planetary motion</strong>: Long division simplifies polynomial functions, calculating orbital paths to interpretable forms.</li>
90 </ul><ul><li><strong>Predicting planetary motion</strong>: Long division simplifies polynomial functions, calculating orbital paths to interpretable forms.</li>
92 </ul><h3>Problem 1</h3>
91 </ul><h3>Problem 1</h3>
93 <p>Divide: (6x² + 8x) ÷ 2x</p>
92 <p>Divide: (6x² + 8x) ÷ 2x</p>
94 <p>Okay, lets begin</p>
93 <p>Okay, lets begin</p>
95 <p>Quotient = 3x + 4, remainder = 0. </p>
94 <p>Quotient = 3x + 4, remainder = 0. </p>
96 <h3>Explanation</h3>
95 <h3>Explanation</h3>
97 <p>\({ 6x^2 \over 2x} = 3x\)</p>
96 <p>\({ 6x^2 \over 2x} = 3x\)</p>
98 <p>\({8x \over 2x} = 4\)</p>
97 <p>\({8x \over 2x} = 4\)</p>
99 <p>Well explained 👍</p>
98 <p>Well explained 👍</p>
100 <h3>Problem 2</h3>
99 <h3>Problem 2</h3>
101 <p>Divide (9x^3- 6x² + 3x) ÷ 3x</p>
100 <p>Divide (9x^3- 6x² + 3x) ÷ 3x</p>
102 <p>Okay, lets begin</p>
101 <p>Okay, lets begin</p>
103 <p>Quotient = 3x2 - 2x + 1, remainder = 0 </p>
102 <p>Quotient = 3x2 - 2x + 1, remainder = 0 </p>
104 <h3>Explanation</h3>
103 <h3>Explanation</h3>
105 <p>Break the expression into separate terms: \({9x^3 \over 3x} - {6x^2 \over 3x} + {3x \over 3x}\)</p>
104 <p>Break the expression into separate terms: \({9x^3 \over 3x} - {6x^2 \over 3x} + {3x \over 3x}\)</p>
106 <p>Now simplify each term:</p>
105 <p>Now simplify each term:</p>
107 <p>\(9x^3\over 3x\) = 3x2</p>
106 <p>\(9x^3\over 3x\) = 3x2</p>
108 <p>\(6x^2\over 3x\) = 2x</p>
107 <p>\(6x^2\over 3x\) = 2x</p>
109 <p>\(3x\over 3x \)= 1 </p>
108 <p>\(3x\over 3x \)= 1 </p>
110 <p>Well explained 👍</p>
109 <p>Well explained 👍</p>
111 <h3>Problem 3</h3>
110 <h3>Problem 3</h3>
112 <p>Divide: (3x cube + 7x² - x + 2) ÷ (x + 2)</p>
111 <p>Divide: (3x cube + 7x² - x + 2) ÷ (x + 2)</p>
113 <p>Okay, lets begin</p>
112 <p>Okay, lets begin</p>
114 <p>Quotient = 3x2 + x - 3, Remainder = 8. </p>
113 <p>Quotient = 3x2 + x - 3, Remainder = 8. </p>
115 <h3>Explanation</h3>
114 <h3>Explanation</h3>
116 <p>3x3 ÷ x = 3x2</p>
115 <p>3x3 ÷ x = 3x2</p>
117 <p>Multiply: 3x2 (x + 2) = 3x3 + 6x2</p>
116 <p>Multiply: 3x2 (x + 2) = 3x3 + 6x2</p>
118 <p>Subtract: (3x3 + 7x2) - (3x3 + 6x2) = x2</p>
117 <p>Subtract: (3x3 + 7x2) - (3x3 + 6x2) = x2</p>
119 <p>Bring down -x</p>
118 <p>Bring down -x</p>
120 <p>x2 ÷ x = x</p>
119 <p>x2 ÷ x = x</p>
121 <p>Multiply: x(x + 2) = x2 + 2x</p>
120 <p>Multiply: x(x + 2) = x2 + 2x</p>
122 <p>Subtract: (x2 - x) - (x2 + 2x) = -3x</p>
121 <p>Subtract: (x2 - x) - (x2 + 2x) = -3x</p>
123 <p>Bring down +2 -3x ÷ x = -3</p>
122 <p>Bring down +2 -3x ÷ x = -3</p>
124 <p>Multiply: -3(x + 2) = -3x - 6</p>
123 <p>Multiply: -3(x + 2) = -3x - 6</p>
125 <p>Subtract: (-3x + 2) - (-3x - 6 ) = 8</p>
124 <p>Subtract: (-3x + 2) - (-3x - 6 ) = 8</p>
126 <p> 3x2 + x - 3 + \(8\over x+2\)</p>
125 <p> 3x2 + x - 3 + \(8\over x+2\)</p>
127 <p>Well explained 👍</p>
126 <p>Well explained 👍</p>
128 <h3>Problem 4</h3>
127 <h3>Problem 4</h3>
129 <p>Divide (5x^3 + 3x² - 7x + 4) ÷ (x² - x + 2)</p>
128 <p>Divide (5x^3 + 3x² - 7x + 4) ÷ (x² - x + 2)</p>
130 <p>Okay, lets begin</p>
129 <p>Okay, lets begin</p>
131 <p>\({{5x^3 + 3x^2 - 7x + 4} \over {x^2 - x + 2}} = {5x + 8 - {9x + 12 \over x^2 - x + 2}}\)</p>
130 <p>\({{5x^3 + 3x^2 - 7x + 4} \over {x^2 - x + 2}} = {5x + 8 - {9x + 12 \over x^2 - x + 2}}\)</p>
132 <h3>Explanation</h3>
131 <h3>Explanation</h3>
133 <p>Dividend: 5x3 + 3x2 - 7x + 4</p>
132 <p>Dividend: 5x3 + 3x2 - 7x + 4</p>
134 <p>Divisor: x2 - x + 2</p>
133 <p>Divisor: x2 - x + 2</p>
135 <p>Dividing leading terms: \(5x^3\over 5x^2\) = 5x</p>
134 <p>Dividing leading terms: \(5x^3\over 5x^2\) = 5x</p>
136 <p>Multiply the divisor by 5x: 5x(x2 - x + 2) = 5x3 - 5x2 + 10x</p>
135 <p>Multiply the divisor by 5x: 5x(x2 - x + 2) = 5x3 - 5x2 + 10x</p>
137 <p>Subtract: (5x3 + 3x2 - 7x + 4) - (5x3 - 5x2 + 10x) </p>
136 <p>Subtract: (5x3 + 3x2 - 7x + 4) - (5x3 - 5x2 + 10x) </p>
138 <p>= (5x3 - 5x3) + (3x2 +5x2) + (-7x - 10x) + 4 </p>
137 <p>= (5x3 - 5x3) + (3x2 +5x2) + (-7x - 10x) + 4 </p>
139 <p>= 0 + 8x2 - 17x + 4</p>
138 <p>= 0 + 8x2 - 17x + 4</p>
140 <p>Now divide 8x2 ÷ x2 = 8</p>
139 <p>Now divide 8x2 ÷ x2 = 8</p>
141 <p>Multiply divisor by 8: 8(x2 - x + 2) = 8x2 - 8x + 16</p>
140 <p>Multiply divisor by 8: 8(x2 - x + 2) = 8x2 - 8x + 16</p>
142 <p>Subtract: (8x2 - 17x + 4) - (8x2 - 8x + 16) </p>
141 <p>Subtract: (8x2 - 17x + 4) - (8x2 - 8x + 16) </p>
143 <p>= (8x2 - 8x2) + (-17x + 8x) + (4 - 16)</p>
142 <p>= (8x2 - 8x2) + (-17x + 8x) + (4 - 16)</p>
144 <p>= - 9x - 12</p>
143 <p>= - 9x - 12</p>
145 <p>Well explained 👍</p>
144 <p>Well explained 👍</p>
146 <h3>Problem 5</h3>
145 <h3>Problem 5</h3>
147 <p>Divide (2x^4 - 3x^3 + x² + 5) ÷ (x² - 2)</p>
146 <p>Divide (2x^4 - 3x^3 + x² + 5) ÷ (x² - 2)</p>
148 <p>Okay, lets begin</p>
147 <p>Okay, lets begin</p>
149 <p> Quotient: 2x2 - 3x + 5, Remainder = -6x + 15. </p>
148 <p> Quotient: 2x2 - 3x + 5, Remainder = -6x + 15. </p>
150 <h3>Explanation</h3>
149 <h3>Explanation</h3>
151 <p>Dividing the leading terms, we get -3x</p>
150 <p>Dividing the leading terms, we get -3x</p>
152 <p>Multiply the divisor: -3x(x2 - 2) = -3x3 + 6x</p>
151 <p>Multiply the divisor: -3x(x2 - 2) = -3x3 + 6x</p>
153 <p>Subtract: (-3x3 + 5x2 + 5) - (-3x3 + 6x) = 0 + 5x2 -6x + 5</p>
152 <p>Subtract: (-3x3 + 5x2 + 5) - (-3x3 + 6x) = 0 + 5x2 -6x + 5</p>
154 <p>Well explained 👍</p>
153 <p>Well explained 👍</p>
155 <h2>FAQs on Long Division of Polynomials</h2>
154 <h2>FAQs on Long Division of Polynomials</h2>
156 <h3>1.How to divide polynomials with long division?</h3>
155 <h3>1.How to divide polynomials with long division?</h3>
157 <p>To divide polynomials with long division, follow these steps:</p>
156 <p>To divide polynomials with long division, follow these steps:</p>
158 <ul><li>Set up the division, and write it in a long division format. </li>
157 <ul><li>Set up the division, and write it in a long division format. </li>
159 <li>Divide the first term of the dividend by the first term of the divisor </li>
158 <li>Divide the first term of the dividend by the first term of the divisor </li>
160 <li>Multiply </li>
159 <li>Multiply </li>
161 <li>Subtract </li>
160 <li>Subtract </li>
162 <li>Repeat </li>
161 <li>Repeat </li>
163 </ul><p>Continue this process till the remainder is zero or of a lower degree than the divisor. </p>
162 </ul><p>Continue this process till the remainder is zero or of a lower degree than the divisor. </p>
164 <h3>2.What do you do if a term is missing in the dividend (e.g., no x² term)?</h3>
163 <h3>2.What do you do if a term is missing in the dividend (e.g., no x² term)?</h3>
165 <p>One can insert a placeholder with zero as its coefficient value. </p>
164 <p>One can insert a placeholder with zero as its coefficient value. </p>
166 <h3>3.When should you use long division instead of synthetic division?</h3>
165 <h3>3.When should you use long division instead of synthetic division?</h3>
167 <p>Use long division when the divisor is not in the form x - a. For example: Divide f(x) = 2x3 + 3x2 - x + 4 by x 2 + 1. Since the divisor is degree 2, one must use a long division. Synthetic division is used when the divisor is linear and in the form x - a. </p>
166 <p>Use long division when the divisor is not in the form x - a. For example: Divide f(x) = 2x3 + 3x2 - x + 4 by x 2 + 1. Since the divisor is degree 2, one must use a long division. Synthetic division is used when the divisor is linear and in the form x - a. </p>
168 <h3>4.What is the importance of long division of polynomials?</h3>
167 <h3>4.What is the importance of long division of polynomials?</h3>
169 <p>Long division is important for the foundation of algebra and calculus. It helps simplify complex algebraic fractions, find quotients and remainders, verify factors, and apply the remainder theorem.</p>
168 <p>Long division is important for the foundation of algebra and calculus. It helps simplify complex algebraic fractions, find quotients and remainders, verify factors, and apply the remainder theorem.</p>
170 <h3>5.What are the advantages and disadvantages of long division? Answer:</h3>
169 <h3>5.What are the advantages and disadvantages of long division? Answer:</h3>
171 <p><strong>Advantages</strong></p>
170 <p><strong>Advantages</strong></p>
172 <p><strong>Disadvantages</strong></p>
171 <p><strong>Disadvantages</strong></p>
173 <p>It is applicable for any divisor, unlike synthetic division.</p>
172 <p>It is applicable for any divisor, unlike synthetic division.</p>
174 <p>Time-consuming method</p>
173 <p>Time-consuming method</p>
175 <p>It is easy to apply and follow.</p>
174 <p>It is easy to apply and follow.</p>
176 <p>Prone to frequent errors</p>
175 <p>Prone to frequent errors</p>
177 <p>Helps simplify complex rational expressions.</p>
176 <p>Helps simplify complex rational expressions.</p>
178 <p>Not always as efficient as synthetic division</p>
177 <p>Not always as efficient as synthetic division</p>
179 <p>It is useful for calculus functions, like simplifying rational functions for limits.</p>
178 <p>It is useful for calculus functions, like simplifying rational functions for limits.</p>
180 <p>Calculations become longer when the divisor is nonlinear</p>
179 <p>Calculations become longer when the divisor is nonlinear</p>
181 <p>Builds groundwork for higher mathematics</p>
180 <p>Builds groundwork for higher mathematics</p>
182 <p>Doesn't offer much visual insight like<a>graphing</a></p>
181 <p>Doesn't offer much visual insight like<a>graphing</a></p>
183 <h2>Jaskaran Singh Saluja</h2>
182 <h2>Jaskaran Singh Saluja</h2>
184 <h3>About the Author</h3>
183 <h3>About the Author</h3>
185 <p>Jaskaran Singh Saluja is a math wizard with nearly three years of experience as a math teacher. His expertise is in algebra, so he can make algebra classes interesting by turning tricky equations into simple puzzles.</p>
184 <p>Jaskaran Singh Saluja is a math wizard with nearly three years of experience as a math teacher. His expertise is in algebra, so he can make algebra classes interesting by turning tricky equations into simple puzzles.</p>
186 <h3>Fun Fact</h3>
185 <h3>Fun Fact</h3>
187 <p>: He loves to play the quiz with kids through algebra to make kids love it.</p>
186 <p>: He loves to play the quiz with kids through algebra to make kids love it.</p>