Algebra Examples

$\frac{8 x^{4} + 12 x^{3} - 2 x}{2 x^{2} + x}$

Step 1

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

$2 x^{2}$

$x$

$0$

$8 x^{4}$

$12 x^{3}$

$0 x^{2}$

$2 x$

$0$

Step 2

Divide the highest order term in the dividend $8 x^{4}$ by the highest order term in divisor $2 x^{2}$ .

$4 x^{2}$

$2 x^{2}$

$x$

$0$

$8 x^{4}$

$12 x^{3}$

$0 x^{2}$

$2 x$

$0$

Step 3

Multiply the new quotient term by the divisor.

$4 x^{2}$

$2 x^{2}$

$x$

$0$

$8 x^{4}$

$12 x^{3}$

$0 x^{2}$

$2 x$

$0$

$8 x^{4}$

$4 x^{3}$

$0$

Step 4

The expression needs to be subtracted from the dividend, so change all the signs in $8 x^{4} + 4 x^{3} + 0$

$4 x^{2}$

$2 x^{2}$

$x$

$0$

$8 x^{4}$

$12 x^{3}$

$0 x^{2}$

$2 x$

$0$

$8 x^{4}$

$4 x^{3}$

$0$

Step 5

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

$4 x^{2}$

$2 x^{2}$

$x$

$0$

$8 x^{4}$

$12 x^{3}$

$0 x^{2}$

$2 x$

$0$

$8 x^{4}$

$4 x^{3}$

$0$

$8 x^{3}$

$0$

Step 6

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

$4 x^{2}$

$2 x^{2}$

$x$

$0$

$8 x^{4}$

$12 x^{3}$

$0 x^{2}$

$2 x$

$0$

$8 x^{4}$

$4 x^{3}$

$0$

$8 x^{3}$

$0$

$2 x$

$0$

Step 7

Divide the highest order term in the dividend $8 x^{3}$ by the highest order term in divisor $2 x^{2}$ .

$4 x^{2}$

$4 x$

$2 x^{2}$

$x$

$0$

$8 x^{4}$

$12 x^{3}$

$0 x^{2}$

$2 x$

$0$

$8 x^{4}$

$4 x^{3}$

$0$

$8 x^{3}$

$0$

$2 x$

$0$

Step 8

Multiply the new quotient term by the divisor.

$4 x^{2}$

$4 x$

$2 x^{2}$

$x$

$0$

$8 x^{4}$

$12 x^{3}$

$0 x^{2}$

$2 x$

$0$

$8 x^{4}$

$4 x^{3}$

$0$

$8 x^{3}$

$0$

$2 x$

$0$

$8 x^{3}$

$4 x^{2}$

$0$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $8 x^{3} + 4 x^{2} + 0$

$4 x^{2}$

$4 x$

$2 x^{2}$

$x$

$0$

$8 x^{4}$

$12 x^{3}$

$0 x^{2}$

$2 x$

$0$

$8 x^{4}$

$4 x^{3}$

$0$

$8 x^{3}$

$0$

$2 x$

$0$

$8 x^{3}$

$4 x^{2}$

$0$

Step 10

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

$4 x^{2}$

$4 x$

$2 x^{2}$

$x$

$0$

$8 x^{4}$

$12 x^{3}$

$0 x^{2}$

$2 x$

$0$

$8 x^{4}$

$4 x^{3}$

$0$

$8 x^{3}$

$0$

$2 x$

$0$

$8 x^{3}$

$4 x^{2}$

$0$

$4 x^{2}$

$2 x$

Step 11

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

$4 x^{2}$

$4 x$

$2 x^{2}$

$x$

$0$

$8 x^{4}$

$12 x^{3}$

$0 x^{2}$

$2 x$

$0$

$8 x^{4}$

$4 x^{3}$

$0$

$8 x^{3}$

$0$

$2 x$

$0$

$8 x^{3}$

$4 x^{2}$

$0$

$4 x^{2}$

$2 x$

$0$

Step 12

Divide the highest order term in the dividend $- 4 x^{2}$ by the highest order term in divisor $2 x^{2}$ .

						$4 x^{2}$	+	$4 x$	-	$2$
$2 x^{2}$	+	$x$	+	$0$		$8 x^{4}$	+	$12 x^{3}$	+	$0 x^{2}$	-	$2 x$	+	$0$
					-	$8 x^{4}$	-	$4 x^{3}$	-	$0$
							+	$8 x^{3}$	+	$0$	-	$2 x$	+	$0$
							-	$8 x^{3}$	-	$4 x^{2}$	-	$0$
									-	$4 x^{2}$	-	$2 x$	+	$0$

Step 13

Multiply the new quotient term by the divisor.

						$4 x^{2}$	+	$4 x$	-	$2$
$2 x^{2}$	+	$x$	+	$0$		$8 x^{4}$	+	$12 x^{3}$	+	$0 x^{2}$	-	$2 x$	+	$0$
					-	$8 x^{4}$	-	$4 x^{3}$	-	$0$
							+	$8 x^{3}$	+	$0$	-	$2 x$	+	$0$
							-	$8 x^{3}$	-	$4 x^{2}$	-	$0$
									-	$4 x^{2}$	-	$2 x$	+	$0$
									-	$4 x^{2}$	-	$2 x$	+	$0$

Step 14

The expression needs to be subtracted from the dividend, so change all the signs in $- 4 x^{2} - 2 x + 0$

						$4 x^{2}$	+	$4 x$	-	$2$
$2 x^{2}$	+	$x$	+	$0$		$8 x^{4}$	+	$12 x^{3}$	+	$0 x^{2}$	-	$2 x$	+	$0$
					-	$8 x^{4}$	-	$4 x^{3}$	-	$0$
							+	$8 x^{3}$	+	$0$	-	$2 x$	+	$0$
							-	$8 x^{3}$	-	$4 x^{2}$	-	$0$
									-	$4 x^{2}$	-	$2 x$	+	$0$
									+	$4 x^{2}$	+	$2 x$	-	$0$

Step 15

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

						$4 x^{2}$	+	$4 x$	-	$2$
$2 x^{2}$	+	$x$	+	$0$		$8 x^{4}$	+	$12 x^{3}$	+	$0 x^{2}$	-	$2 x$	+	$0$
					-	$8 x^{4}$	-	$4 x^{3}$	-	$0$
							+	$8 x^{3}$	+	$0$	-	$2 x$	+	$0$
							-	$8 x^{3}$	-	$4 x^{2}$	-	$0$
									-	$4 x^{2}$	-	$2 x$	+	$0$
									+	$4 x^{2}$	+	$2 x$	-	$0$
														$0$

Step 16

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

$4 x^{2} + 4 x - 2$