Divide Using Long Polynomial Division (8x^4-18x^3+9x^2+4x+2)÷(x^2-2x+1)

$(8 x^{4} - 18 x^{3} + 9 x^{2} + 4 x + 2) \div (x^{2} - 2 x + 1)$

Step 1

Set up the polynomials to be divided. If there is not a term for every exponent, insert one with a value of $0$ .

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

Step 2

Divide the highest order term in the dividend $8 x^{4}$ by the highest order term in divisor $x^{2}$ .

$8 x^{2}$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

Step 3

Multiply the new quotient term by the divisor.

$8 x^{2}$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

Step 4

The expression needs to be subtracted from the dividend, so change all the signs in $8 x^{4} - 16 x^{3} + 8 x^{2}$

$8 x^{2}$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

Step 5

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

$8 x^{2}$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

$2 x^{3}$

$x^{2}$

Step 6

Pull the next terms from the original dividend down into the current dividend.

$8 x^{2}$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

$2 x^{3}$

$x^{2}$

$4 x$

Step 7

Divide the highest order term in the dividend $- 2 x^{3}$ by the highest order term in divisor $x^{2}$ .

$8 x^{2}$

$2 x$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

$2 x^{3}$

$x^{2}$

$4 x$

Step 8

Multiply the new quotient term by the divisor.

$8 x^{2}$

$2 x$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

$2 x^{3}$

$x^{2}$

$4 x$

$2 x^{3}$

$4 x^{2}$

$2 x$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $- 2 x^{3} + 4 x^{2} - 2 x$

$8 x^{2}$

$2 x$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

$2 x^{3}$

$x^{2}$

$4 x$

$2 x^{3}$

$4 x^{2}$

$2 x$

Step 10

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

$8 x^{2}$

$2 x$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

$2 x^{3}$

$x^{2}$

$4 x$

$2 x^{3}$

$4 x^{2}$

$2 x$

$3 x^{2}$

$6 x$

Step 11

Pull the next terms from the original dividend down into the current dividend.

$8 x^{2}$

$2 x$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

$2 x^{3}$

$x^{2}$

$4 x$

$2 x^{3}$

$4 x^{2}$

$2 x$

$3 x^{2}$

$6 x$

$2$

Step 12

Divide the highest order term in the dividend $- 3 x^{2}$ by the highest order term in divisor $x^{2}$ .

$8 x^{2}$

$2 x$

$3$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

$2 x^{3}$

$x^{2}$

$4 x$

$2 x^{3}$

$4 x^{2}$

$2 x$

$3 x^{2}$

$6 x$

$2$

Step 13

Multiply the new quotient term by the divisor.

$8 x^{2}$

$2 x$

$3$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

$2 x^{3}$

$x^{2}$

$4 x$

$2 x^{3}$

$4 x^{2}$

$2 x$

$3 x^{2}$

$6 x$

$2$

$3 x^{2}$

$6 x$

$3$

Step 14

The expression needs to be subtracted from the dividend, so change all the signs in $- 3 x^{2} + 6 x - 3$

$8 x^{2}$

$2 x$

$3$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

$2 x^{3}$

$x^{2}$

$4 x$

$2 x^{3}$

$4 x^{2}$

$2 x$

$3 x^{2}$

$6 x$

$2$

$3 x^{2}$

$6 x$

$3$

Step 15

After changing the signs, add the last dividend from the multiplied polynomial to find the new dividend.

$8 x^{2}$

$2 x$

$3$

$x^{2}$

$2 x$

$1$

$8 x^{4}$

$18 x^{3}$

$9 x^{2}$

$4 x$

$2$

$8 x^{4}$

$16 x^{3}$

$8 x^{2}$

$2 x^{3}$

$x^{2}$

$4 x$

$2 x^{3}$

$4 x^{2}$

$2 x$

$3 x^{2}$

$6 x$

$2$

$3 x^{2}$

$6 x$

$3$

$5$

Step 16

The final answer is the quotient plus the remainder over the divisor.

$8 x^{2} - 2 x - 3 + \frac{5}{x^{2} - 2 x + 1}$

Divide Using Long Polynomial Division (8x^4-18x^3+9x^2+4x+2)÷(x^2-2x+1)

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