Algebra Examples

$\frac{- 2 x^{12} + 3 x^{6} - x^{5} + 15 x}{x^{5}}$

Step 1

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

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

Step 2

Divide the highest order term in the dividend $- 2 x^{12}$ by the highest order term in divisor $x^{5}$ .

$2 x^{7}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

Step 3

Multiply the new quotient term by the divisor.

$2 x^{7}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

Step 4

The expression needs to be subtracted from the dividend, so change all the signs in $- 2 x^{12} + 0 + 0 + 0 + 0 + 0$

$2 x^{7}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

Step 5

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

$2 x^{7}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

Step 6

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

$2 x^{7}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

Step 7

Divide the highest order term in the dividend $3 x^{6}$ by the highest order term in divisor $x^{5}$ .

$2 x^{7}$

$0 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$3 x$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

Step 8

Multiply the new quotient term by the divisor.

$2 x^{7}$

$0 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$3 x$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$3 x^{6}$

$0$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $3 x^{6} + 0 + 0 + 0 + 0 + 0$

$2 x^{7}$

$0 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$3 x$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$3 x^{6}$

$0$

Step 10

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

$2 x^{7}$

$0 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$3 x$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$3 x^{6}$

$0$

$x^{5}$

$0$

$15 x$

Step 11

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

$2 x^{7}$

$0 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$3 x$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$3 x^{6}$

$0$

$x^{5}$

$0$

$15 x$

$0$

Step 12

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

$2 x^{7}$

$0 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$3 x$

$1$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$3 x^{6}$

$0$

$x^{5}$

$0$

$15 x$

$0$

Step 13

Multiply the new quotient term by the divisor.

$2 x^{7}$

$0 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$3 x$

$1$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$3 x^{6}$

$0$

$x^{5}$

$0$

$15 x$

$0$

$x^{5}$

$0$

Step 14

The expression needs to be subtracted from the dividend, so change all the signs in $- x^{5} + 0 + 0 + 0 + 0 + 0$

$2 x^{7}$

$0 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$3 x$

$1$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$3 x^{6}$

$0$

$x^{5}$

$0$

$15 x$

$0$

$x^{5}$

$0$

Step 15

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

$2 x^{7}$

$0 x^{6}$

$0 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$3 x$

$1$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$2 x^{12}$

$0 x^{11}$

$0 x^{10}$

$0 x^{9}$

$0 x^{8}$

$0 x^{7}$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$0$

$2 x^{12}$

$0$

$3 x^{6}$

$x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$15 x$

$3 x^{6}$

$0$

$x^{5}$

$0$

$15 x$

$0$

$x^{5}$

$0$

$15 x$

$0$

Step 16

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

$- 2 x^{7} + 3 x - 1 + \frac{15 x}{x^{5}}$