Algebra Examples

$\frac{- 15 x^{7} - 12 x^{6} + 24 x^{4} - 6 x^{2}}{- 3 x^{4}}$

Step 1

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

$3 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$15 x^{7}$

$12 x^{6}$

$0 x^{5}$

$24 x^{4}$

$0 x^{3}$

$6 x^{2}$

$0 x$

$0$

Step 2

Divide the highest order term in the dividend $- 15 x^{7}$ by the highest order term in divisor $- 3 x^{4}$ .

$5 x^{3}$

$3 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$15 x^{7}$

$12 x^{6}$

$0 x^{5}$

$24 x^{4}$

$0 x^{3}$

$6 x^{2}$

$0 x$

$0$

Step 3

Multiply the new quotient term by the divisor.

$5 x^{3}$

$3 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$15 x^{7}$

$12 x^{6}$

$0 x^{5}$

$24 x^{4}$

$0 x^{3}$

$6 x^{2}$

$0 x$

$0$

$15 x^{7}$

$0$

Step 4

The expression needs to be subtracted from the dividend, so change all the signs in $- 15 x^{7} + 0 + 0 + 0 + 0$

$5 x^{3}$

$3 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$15 x^{7}$

$12 x^{6}$

$0 x^{5}$

$24 x^{4}$

$0 x^{3}$

$6 x^{2}$

$0 x$

$0$

$15 x^{7}$

$0$

Step 5

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

$5 x^{3}$

$3 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$15 x^{7}$

$12 x^{6}$

$0 x^{5}$

$24 x^{4}$

$0 x^{3}$

$6 x^{2}$

$0 x$

$0$

$15 x^{7}$

$0$

$12 x^{6}$

$0$

$24 x^{4}$

$0$

Step 6

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

$5 x^{3}$

$3 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$15 x^{7}$

$12 x^{6}$

$0 x^{5}$

$24 x^{4}$

$0 x^{3}$

$6 x^{2}$

$0 x$

$0$

$15 x^{7}$

$0$

$12 x^{6}$

$0$

$24 x^{4}$

$0$

$6 x^{2}$

$0 x$

$0$

Step 7

Divide the highest order term in the dividend $- 12 x^{6}$ by the highest order term in divisor $- 3 x^{4}$ .

$5 x^{3}$

$4 x^{2}$

$3 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$15 x^{7}$

$12 x^{6}$

$0 x^{5}$

$24 x^{4}$

$0 x^{3}$

$6 x^{2}$

$0 x$

$0$

$15 x^{7}$

$0$

$12 x^{6}$

$0$

$24 x^{4}$

$0$

$6 x^{2}$

$0 x$

$0$

Step 8

Multiply the new quotient term by the divisor.

$5 x^{3}$

$4 x^{2}$

$3 x^{4}$

$0 x^{3}$

$0 x^{2}$

$0 x$

$0$

$15 x^{7}$

$12 x^{6}$

$0 x^{5}$

$24 x^{4}$

$0 x^{3}$

$6 x^{2}$

$0 x$

$0$

$15 x^{7}$

$0$

$12 x^{6}$

$0$

$24 x^{4}$

$0$

$6 x^{2}$

$0 x$

$0$

$12 x^{6}$

$0$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $- 12 x^{6} + 0 + 0 + 0 + 0$

											$5 x^{3}$	+	$4 x^{2}$
-	$3 x^{4}$	+	$0 x^{3}$	+	$0 x^{2}$	+	$0 x$	+	$0$	-	$15 x^{7}$	-	$12 x^{6}$	+	$0 x^{5}$	+	$24 x^{4}$	+	$0 x^{3}$	-	$6 x^{2}$	+	$0 x$	+	$0$
										+	$15 x^{7}$	-	$0$	-	$0$	-	$0$	-	$0$
												-	$12 x^{6}$	+	$0$	+	$24 x^{4}$	+	$0$	-	$6 x^{2}$	+	$0 x$	+	$0$
												+	$12 x^{6}$	-	$0$	-	$0$	-	$0$	-	$0$

Step 10

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

											$5 x^{3}$	+	$4 x^{2}$
-	$3 x^{4}$	+	$0 x^{3}$	+	$0 x^{2}$	+	$0 x$	+	$0$	-	$15 x^{7}$	-	$12 x^{6}$	+	$0 x^{5}$	+	$24 x^{4}$	+	$0 x^{3}$	-	$6 x^{2}$	+	$0 x$	+	$0$
										+	$15 x^{7}$	-	$0$	-	$0$	-	$0$	-	$0$
												-	$12 x^{6}$	+	$0$	+	$24 x^{4}$	+	$0$	-	$6 x^{2}$	+	$0 x$	+	$0$
												+	$12 x^{6}$	-	$0$	-	$0$	-	$0$	-	$0$
																+	$24 x^{4}$	+	$0$	-	$6 x^{2}$

Step 11

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

											$5 x^{3}$	+	$4 x^{2}$
-	$3 x^{4}$	+	$0 x^{3}$	+	$0 x^{2}$	+	$0 x$	+	$0$	-	$15 x^{7}$	-	$12 x^{6}$	+	$0 x^{5}$	+	$24 x^{4}$	+	$0 x^{3}$	-	$6 x^{2}$	+	$0 x$	+	$0$
										+	$15 x^{7}$	-	$0$	-	$0$	-	$0$	-	$0$
												-	$12 x^{6}$	+	$0$	+	$24 x^{4}$	+	$0$	-	$6 x^{2}$	+	$0 x$	+	$0$
												+	$12 x^{6}$	-	$0$	-	$0$	-	$0$	-	$0$
																+	$24 x^{4}$	+	$0$	-	$6 x^{2}$	+	$0 x$	+	$0$

Step 12

Divide the highest order term in the dividend $24 x^{4}$ by the highest order term in divisor $- 3 x^{4}$ .

											$5 x^{3}$	+	$4 x^{2}$	+	$0 x$	-	$8$
-	$3 x^{4}$	+	$0 x^{3}$	+	$0 x^{2}$	+	$0 x$	+	$0$	-	$15 x^{7}$	-	$12 x^{6}$	+	$0 x^{5}$	+	$24 x^{4}$	+	$0 x^{3}$	-	$6 x^{2}$	+	$0 x$	+	$0$
										+	$15 x^{7}$	-	$0$	-	$0$	-	$0$	-	$0$
												-	$12 x^{6}$	+	$0$	+	$24 x^{4}$	+	$0$	-	$6 x^{2}$	+	$0 x$	+	$0$
												+	$12 x^{6}$	-	$0$	-	$0$	-	$0$	-	$0$
																+	$24 x^{4}$	+	$0$	-	$6 x^{2}$	+	$0 x$	+	$0$

Step 13

Multiply the new quotient term by the divisor.

											$5 x^{3}$	+	$4 x^{2}$	+	$0 x$	-	$8$
-	$3 x^{4}$	+	$0 x^{3}$	+	$0 x^{2}$	+	$0 x$	+	$0$	-	$15 x^{7}$	-	$12 x^{6}$	+	$0 x^{5}$	+	$24 x^{4}$	+	$0 x^{3}$	-	$6 x^{2}$	+	$0 x$	+	$0$
										+	$15 x^{7}$	-	$0$	-	$0$	-	$0$	-	$0$
												-	$12 x^{6}$	+	$0$	+	$24 x^{4}$	+	$0$	-	$6 x^{2}$	+	$0 x$	+	$0$
												+	$12 x^{6}$	-	$0$	-	$0$	-	$0$	-	$0$
																+	$24 x^{4}$	+	$0$	-	$6 x^{2}$	+	$0 x$	+	$0$
																+	$24 x^{4}$	+	$0$	+	$0$	+	$0$	+	$0$

Step 14

The expression needs to be subtracted from the dividend, so change all the signs in $24 x^{4} + 0 + 0 + 0 + 0$

											$5 x^{3}$	+	$4 x^{2}$	+	$0 x$	-	$8$
-	$3 x^{4}$	+	$0 x^{3}$	+	$0 x^{2}$	+	$0 x$	+	$0$	-	$15 x^{7}$	-	$12 x^{6}$	+	$0 x^{5}$	+	$24 x^{4}$	+	$0 x^{3}$	-	$6 x^{2}$	+	$0 x$	+	$0$
										+	$15 x^{7}$	-	$0$	-	$0$	-	$0$	-	$0$
												-	$12 x^{6}$	+	$0$	+	$24 x^{4}$	+	$0$	-	$6 x^{2}$	+	$0 x$	+	$0$
												+	$12 x^{6}$	-	$0$	-	$0$	-	$0$	-	$0$
																+	$24 x^{4}$	+	$0$	-	$6 x^{2}$	+	$0 x$	+	$0$
																-	$24 x^{4}$	-	$0$	-	$0$	-	$0$	-	$0$

Step 15

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

											$5 x^{3}$	+	$4 x^{2}$	+	$0 x$	-	$8$
-	$3 x^{4}$	+	$0 x^{3}$	+	$0 x^{2}$	+	$0 x$	+	$0$	-	$15 x^{7}$	-	$12 x^{6}$	+	$0 x^{5}$	+	$24 x^{4}$	+	$0 x^{3}$	-	$6 x^{2}$	+	$0 x$	+	$0$
										+	$15 x^{7}$	-	$0$	-	$0$	-	$0$	-	$0$
												-	$12 x^{6}$	+	$0$	+	$24 x^{4}$	+	$0$	-	$6 x^{2}$	+	$0 x$	+	$0$
												+	$12 x^{6}$	-	$0$	-	$0$	-	$0$	-	$0$
																+	$24 x^{4}$	+	$0$	-	$6 x^{2}$	+	$0 x$	+	$0$
																-	$24 x^{4}$	-	$0$	-	$0$	-	$0$	-	$0$
																				-	$6 x^{2}$	+	$0$	+	$0$

Step 16

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

$5 x^{3} + 4 x^{2} - 8 + \frac{- 6 x^{2}}{- 3 x^{4}}$