Divide Using Long Polynomial Division (x^5+15x^4+54x^3-25x^2-75x-34)÷(x+8)

$(x^{5} + 15 x^{4} + 54 x^{3} - 25 x^{2} - 75 x - 34) \div (x + 8)$

Step 1

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

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

Step 2

Divide the highest order term in the dividend $x^{5}$ by the highest order term in divisor $x$ .

$x^{4}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

Step 3

Multiply the new quotient term by the divisor.

$x^{4}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

Step 4

The expression needs to be subtracted from the dividend, so change all the signs in $x^{5} + 8 x^{4}$

$x^{4}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

Step 5

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

$x^{4}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

Step 6

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

$x^{4}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

Step 7

Divide the highest order term in the dividend $7 x^{4}$ by the highest order term in divisor $x$ .

$x^{4}$

$7 x^{3}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

Step 8

Multiply the new quotient term by the divisor.

$x^{4}$

$7 x^{3}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $7 x^{4} + 56 x^{3}$

$x^{4}$

$7 x^{3}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

Step 10

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

$x^{4}$

$7 x^{3}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

Step 11

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

$x^{4}$

$7 x^{3}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

Step 12

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

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

Step 13

Multiply the new quotient term by the divisor.

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

Step 14

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

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

Step 15

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

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

$9 x^{2}$

Step 16

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

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

$9 x^{2}$

$75 x$

Step 17

Divide the highest order term in the dividend $- 9 x^{2}$ by the highest order term in divisor $x$ .

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$9 x$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

$9 x^{2}$

$75 x$

Step 18

Multiply the new quotient term by the divisor.

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$9 x$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

$9 x^{2}$

$75 x$

$9 x^{2}$

$72 x$

Step 19

The expression needs to be subtracted from the dividend, so change all the signs in $- 9 x^{2} - 72 x$

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$9 x$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

$9 x^{2}$

$75 x$

$9 x^{2}$

$72 x$

Step 20

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

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$9 x$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

$9 x^{2}$

$75 x$

$9 x^{2}$

$72 x$

$3 x$

Step 21

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

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$9 x$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

$9 x^{2}$

$75 x$

$9 x^{2}$

$72 x$

$3 x$

$34$

Step 22

Divide the highest order term in the dividend $- 3 x$ by the highest order term in divisor $x$ .

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$9 x$

$3$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

$9 x^{2}$

$75 x$

$9 x^{2}$

$72 x$

$3 x$

$34$

Step 23

Multiply the new quotient term by the divisor.

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$9 x$

$3$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

$9 x^{2}$

$75 x$

$9 x^{2}$

$72 x$

$3 x$

$34$

$3 x$

$24$

Step 24

The expression needs to be subtracted from the dividend, so change all the signs in $- 3 x - 24$

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$9 x$

$3$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

$9 x^{2}$

$75 x$

$9 x^{2}$

$72 x$

$3 x$

$34$

$3 x$

$24$

Step 25

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

$x^{4}$

$7 x^{3}$

$2 x^{2}$

$9 x$

$3$

$x$

$8$

$x^{5}$

$15 x^{4}$

$54 x^{3}$

$25 x^{2}$

$75 x$

$34$

$x^{5}$

$8 x^{4}$

$7 x^{4}$

$54 x^{3}$

$7 x^{4}$

$56 x^{3}$

$2 x^{3}$

$25 x^{2}$

$2 x^{3}$

$16 x^{2}$

$9 x^{2}$

$75 x$

$9 x^{2}$

$72 x$

$3 x$

$34$

$3 x$

$24$

$10$

Step 26

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

$x^{4} + 7 x^{3} - 2 x^{2} - 9 x - 3 - \frac{10}{x + 8}$

Divide Using Long Polynomial Division (x^5+15x^4+54x^3-25x^2-75x-34)÷(x+8)

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