Divide Using Long Polynomial Division (5x^5-1)÷(5x+5)

$(5 x^{5} - 1) \div (5 x + 5)$

Step 1

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

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

Step 2

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

$x^{4}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

Step 3

Multiply the new quotient term by the divisor.

$x^{4}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

Step 4

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

$x^{4}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

Step 5

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

$x^{4}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

Step 6

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

$x^{4}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

Step 7

Divide the highest order term in the dividend $- 5 x^{4}$ by the highest order term in divisor $5 x$ .

$x^{4}$

$x^{3}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

Step 8

Multiply the new quotient term by the divisor.

$x^{4}$

$x^{3}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $- 5 x^{4} - 5 x^{3}$

$x^{4}$

$x^{3}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

Step 10

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

$x^{4}$

$x^{3}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

Step 11

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

$x^{4}$

$x^{3}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

Step 12

Divide the highest order term in the dividend $5 x^{3}$ by the highest order term in divisor $5 x$ .

$x^{4}$

$x^{3}$

$x^{2}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

Step 13

Multiply the new quotient term by the divisor.

$x^{4}$

$x^{3}$

$x^{2}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

Step 14

The expression needs to be subtracted from the dividend, so change all the signs in $5 x^{3} + 5 x^{2}$

$x^{4}$

$x^{3}$

$x^{2}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

Step 15

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

$x^{4}$

$x^{3}$

$x^{2}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

Step 16

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

$x^{4}$

$x^{3}$

$x^{2}$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

$0 x$

Step 17

Divide the highest order term in the dividend $- 5 x^{2}$ by the highest order term in divisor $5 x$ .

$x^{4}$

$x^{3}$

$x^{2}$

$x$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

$0 x$

Step 18

Multiply the new quotient term by the divisor.

$x^{4}$

$x^{3}$

$x^{2}$

$x$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

$0 x$

$5 x^{2}$

$5 x$

Step 19

The expression needs to be subtracted from the dividend, so change all the signs in $- 5 x^{2} - 5 x$

$x^{4}$

$x^{3}$

$x^{2}$

$x$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

$0 x$

$5 x^{2}$

$5 x$

Step 20

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

$x^{4}$

$x^{3}$

$x^{2}$

$x$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

$0 x$

$5 x^{2}$

$5 x$

Step 21

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

$x^{4}$

$x^{3}$

$x^{2}$

$x$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

$0 x$

$5 x^{2}$

$5 x$

$1$

Step 22

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

$x^{4}$

$x^{3}$

$x^{2}$

$x$

$1$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

$0 x$

$5 x^{2}$

$5 x$

$1$

Step 23

Multiply the new quotient term by the divisor.

$x^{4}$

$x^{3}$

$x^{2}$

$x$

$1$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

$0 x$

$5 x^{2}$

$5 x$

$1$

$5 x$

$5$

Step 24

The expression needs to be subtracted from the dividend, so change all the signs in $5 x + 5$

$x^{4}$

$x^{3}$

$x^{2}$

$x$

$1$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

$0 x$

$5 x^{2}$

$5 x$

$1$

$5 x$

$5$

Step 25

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

$x^{4}$

$x^{3}$

$x^{2}$

$x$

$1$

$5 x$

$5$

$5 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$1$

$5 x^{5}$

$5 x^{4}$

$0 x^{3}$

$5 x^{4}$

$5 x^{3}$

$0 x^{2}$

$5 x^{3}$

$5 x^{2}$

$0 x$

$5 x^{2}$

$5 x$

$1$

$5 x$

$5$

$6$

Step 26

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

$x^{4} - x^{3} + x^{2} - x + 1 - \frac{6}{5 x + 5}$

Divide Using Long Polynomial Division (5x^5-1)÷(5x+5)

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