Pre-Algebra Examples

$\frac{y^{4} + 13 y^{3} + 43 y^{2} + 63 y + 72}{y + 3}$

Step 1

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

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

Step 2

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

$y^{3}$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

Step 3

Multiply the new quotient term by the divisor.

$y^{3}$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

Step 4

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

$y^{3}$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

Step 5

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

$y^{3}$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

Step 6

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

$y^{3}$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

Step 7

Divide the highest order term in the dividend $10 y^{3}$ by the highest order term in divisor $y$ .

$y^{3}$

$10 y^{2}$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

Step 8

Multiply the new quotient term by the divisor.

$y^{3}$

$10 y^{2}$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $10 y^{3} + 30 y^{2}$

$y^{3}$

$10 y^{2}$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

Step 10

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

$y^{3}$

$10 y^{2}$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

$13 y^{2}$

Step 11

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

$y^{3}$

$10 y^{2}$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

$13 y^{2}$

$63 y$

Step 12

Divide the highest order term in the dividend $13 y^{2}$ by the highest order term in divisor $y$ .

$y^{3}$

$10 y^{2}$

$13 y$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

$13 y^{2}$

$63 y$

Step 13

Multiply the new quotient term by the divisor.

$y^{3}$

$10 y^{2}$

$13 y$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

$13 y^{2}$

$63 y$

$13 y^{2}$

$39 y$

Step 14

The expression needs to be subtracted from the dividend, so change all the signs in $13 y^{2} + 39 y$

$y^{3}$

$10 y^{2}$

$13 y$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

$13 y^{2}$

$63 y$

$13 y^{2}$

$39 y$

Step 15

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

$y^{3}$

$10 y^{2}$

$13 y$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

$13 y^{2}$

$63 y$

$13 y^{2}$

$39 y$

$24 y$

Step 16

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

$y^{3}$

$10 y^{2}$

$13 y$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

$13 y^{2}$

$63 y$

$13 y^{2}$

$39 y$

$24 y$

$72$

Step 17

Divide the highest order term in the dividend $24 y$ by the highest order term in divisor $y$ .

$y^{3}$

$10 y^{2}$

$13 y$

$24$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

$13 y^{2}$

$63 y$

$13 y^{2}$

$39 y$

$24 y$

$72$

Step 18

Multiply the new quotient term by the divisor.

$y^{3}$

$10 y^{2}$

$13 y$

$24$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

$13 y^{2}$

$63 y$

$13 y^{2}$

$39 y$

$24 y$

$72$

$24 y$

$72$

Step 19

The expression needs to be subtracted from the dividend, so change all the signs in $24 y + 72$

$y^{3}$

$10 y^{2}$

$13 y$

$24$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

$13 y^{2}$

$63 y$

$13 y^{2}$

$39 y$

$24 y$

$72$

$24 y$

$72$

Step 20

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

$y^{3}$

$10 y^{2}$

$13 y$

$24$

$y$

$3$

$y^{4}$

$13 y^{3}$

$43 y^{2}$

$63 y$

$72$

$y^{4}$

$3 y^{3}$

$10 y^{3}$

$43 y^{2}$

$10 y^{3}$

$30 y^{2}$

$13 y^{2}$

$63 y$

$13 y^{2}$

$39 y$

$24 y$

$72$

$24 y$

$72$

$0$

Step 21

Since the remander is $0$ , the final answer is the quotient.

$y^{3} + 10 y^{2} + 13 y + 24$