Pre-Algebra Examples

$(3 x^{5} - 23328) \div (x - 6)$

Step 1

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

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

Step 2

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

$3 x^{4}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

Step 3

Multiply the new quotient term by the divisor.

$3 x^{4}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

Step 4

The expression needs to be subtracted from the dividend, so change all the signs in $3 x^{5} - 18 x^{4}$

$3 x^{4}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

Step 5

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

$3 x^{4}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

Step 6

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

$3 x^{4}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

Step 7

Divide the highest order term in the dividend $18 x^{4}$ by the highest order term in divisor $x$ .

$3 x^{4}$

$18 x^{3}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

Step 8

Multiply the new quotient term by the divisor.

$3 x^{4}$

$18 x^{3}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $18 x^{4} - 108 x^{3}$

$3 x^{4}$

$18 x^{3}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

Step 10

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

$3 x^{4}$

$18 x^{3}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

Step 11

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

$3 x^{4}$

$18 x^{3}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

Step 12

Divide the highest order term in the dividend $108 x^{3}$ by the highest order term in divisor $x$ .

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

Step 13

Multiply the new quotient term by the divisor.

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

Step 14

The expression needs to be subtracted from the dividend, so change all the signs in $108 x^{3} - 648 x^{2}$

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

Step 15

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

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

Step 16

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

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

$0 x$

Step 17

Divide the highest order term in the dividend $648 x^{2}$ by the highest order term in divisor $x$ .

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$648 x$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

$0 x$

Step 18

Multiply the new quotient term by the divisor.

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$648 x$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

$0 x$

$648 x^{2}$

$3888 x$

Step 19

The expression needs to be subtracted from the dividend, so change all the signs in $648 x^{2} - 3888 x$

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$648 x$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

$0 x$

$648 x^{2}$

$3888 x$

Step 20

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

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$648 x$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

$0 x$

$648 x^{2}$

$3888 x$

Step 21

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

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$648 x$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

$0 x$

$648 x^{2}$

$3888 x$

$23328$

Step 22

Divide the highest order term in the dividend $3888 x$ by the highest order term in divisor $x$ .

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$648 x$

$3888$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

$0 x$

$648 x^{2}$

$3888 x$

$23328$

Step 23

Multiply the new quotient term by the divisor.

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$648 x$

$3888$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

$0 x$

$648 x^{2}$

$3888 x$

$23328$

$3888 x$

$23328$

Step 24

The expression needs to be subtracted from the dividend, so change all the signs in $3888 x - 23328$

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$648 x$

$3888$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

$0 x$

$648 x^{2}$

$3888 x$

$23328$

$3888 x$

$23328$

Step 25

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

$3 x^{4}$

$18 x^{3}$

$108 x^{2}$

$648 x$

$3888$

$x$

$6$

$3 x^{5}$

$0 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$23328$

$3 x^{5}$

$18 x^{4}$

$0 x^{3}$

$18 x^{4}$

$108 x^{3}$

$0 x^{2}$

$108 x^{3}$

$648 x^{2}$

$0 x$

$648 x^{2}$

$3888 x$

$23328$

$3888 x$

$23328$

$0$

Step 26

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

$3 x^{4} + 18 x^{3} + 108 x^{2} + 648 x + 3888$