Algebra Examples

$\frac{5 x^{4} - 3 x^{3} - 24 x^{2} + 2 x - 5}{x + 2}$

Step 1

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

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

Step 2

Divide the highest order term in the dividend $5 x^{4}$ by the highest order term in divisor $x$ .

$5 x^{3}$

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

Step 3

Multiply the new quotient term by the divisor.

$5 x^{3}$

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

$5 x^{4}$

$10 x^{3}$

Step 4

The expression needs to be subtracted from the dividend, so change all the signs in $5 x^{4} + 10 x^{3}$

				$5 x^{3}$
$x$	+	$2$		$5 x^{4}$	-	$3 x^{3}$	-	$24 x^{2}$	+	$2 x$	-	$5$
			-	$5 x^{4}$	-	$10 x^{3}$

Step 5

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

				$5 x^{3}$
$x$	+	$2$		$5 x^{4}$	-	$3 x^{3}$	-	$24 x^{2}$	+	$2 x$	-	$5$
			-	$5 x^{4}$	-	$10 x^{3}$
					-	$13 x^{3}$

Step 6

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

				$5 x^{3}$
$x$	+	$2$		$5 x^{4}$	-	$3 x^{3}$	-	$24 x^{2}$	+	$2 x$	-	$5$
			-	$5 x^{4}$	-	$10 x^{3}$
					-	$13 x^{3}$	-	$24 x^{2}$

Step 7

Divide the highest order term in the dividend $- 13 x^{3}$ by the highest order term in divisor $x$ .

				$5 x^{3}$	-	$13 x^{2}$
$x$	+	$2$		$5 x^{4}$	-	$3 x^{3}$	-	$24 x^{2}$	+	$2 x$	-	$5$
			-	$5 x^{4}$	-	$10 x^{3}$
					-	$13 x^{3}$	-	$24 x^{2}$

Step 8

Multiply the new quotient term by the divisor.

				$5 x^{3}$	-	$13 x^{2}$
$x$	+	$2$		$5 x^{4}$	-	$3 x^{3}$	-	$24 x^{2}$	+	$2 x$	-	$5$
			-	$5 x^{4}$	-	$10 x^{3}$
					-	$13 x^{3}$	-	$24 x^{2}$
					-	$13 x^{3}$	-	$26 x^{2}$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $- 13 x^{3} - 26 x^{2}$

$5 x^{3}$

$13 x^{2}$

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

$5 x^{4}$

$10 x^{3}$

$13 x^{3}$

$24 x^{2}$

$13 x^{3}$

$26 x^{2}$

Step 10

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

$5 x^{3}$

$13 x^{2}$

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

$5 x^{4}$

$10 x^{3}$

$13 x^{3}$

$24 x^{2}$

$13 x^{3}$

$26 x^{2}$

$2 x^{2}$

Step 11

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

$5 x^{3}$

$13 x^{2}$

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

$5 x^{4}$

$10 x^{3}$

$13 x^{3}$

$24 x^{2}$

$13 x^{3}$

$26 x^{2}$

$2 x^{2}$

$2 x$

Step 12

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

$5 x^{3}$

$13 x^{2}$

$2 x$

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

$5 x^{4}$

$10 x^{3}$

$13 x^{3}$

$24 x^{2}$

$13 x^{3}$

$26 x^{2}$

$2 x^{2}$

$2 x$

Step 13

Multiply the new quotient term by the divisor.

$5 x^{3}$

$13 x^{2}$

$2 x$

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

$5 x^{4}$

$10 x^{3}$

$13 x^{3}$

$24 x^{2}$

$13 x^{3}$

$26 x^{2}$

$2 x^{2}$

$2 x$

$2 x^{2}$

$4 x$

Step 14

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

$5 x^{3}$

$13 x^{2}$

$2 x$

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

$5 x^{4}$

$10 x^{3}$

$13 x^{3}$

$24 x^{2}$

$13 x^{3}$

$26 x^{2}$

$2 x^{2}$

$2 x$

$2 x^{2}$

$4 x$

Step 15

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

$5 x^{3}$

$13 x^{2}$

$2 x$

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

$5 x^{4}$

$10 x^{3}$

$13 x^{3}$

$24 x^{2}$

$13 x^{3}$

$26 x^{2}$

$2 x^{2}$

$2 x$

$2 x^{2}$

$4 x$

$2 x$

Step 16

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

$5 x^{3}$

$13 x^{2}$

$2 x$

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

$5 x^{4}$

$10 x^{3}$

$13 x^{3}$

$24 x^{2}$

$13 x^{3}$

$26 x^{2}$

$2 x^{2}$

$2 x$

$2 x^{2}$

$4 x$

$2 x$

$5$

Step 17

Divide the highest order term in the dividend $- 2 x$ by the highest order term in divisor $x$ .

$5 x^{3}$

$13 x^{2}$

$2 x$

$2$

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

$5 x^{4}$

$10 x^{3}$

$13 x^{3}$

$24 x^{2}$

$13 x^{3}$

$26 x^{2}$

$2 x^{2}$

$2 x$

$2 x^{2}$

$4 x$

$2 x$

$5$

Step 18

Multiply the new quotient term by the divisor.

				$5 x^{3}$	-	$13 x^{2}$	+	$2 x$	-	$2$
$x$	+	$2$		$5 x^{4}$	-	$3 x^{3}$	-	$24 x^{2}$	+	$2 x$	-	$5$
			-	$5 x^{4}$	-	$10 x^{3}$
					-	$13 x^{3}$	-	$24 x^{2}$
					+	$13 x^{3}$	+	$26 x^{2}$
							+	$2 x^{2}$	+	$2 x$
							-	$2 x^{2}$	-	$4 x$
									-	$2 x$	-	$5$
									-	$2 x$	-	$4$

Step 19

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

$5 x^{3}$

$13 x^{2}$

$2 x$

$2$

$x$

$2$

$5 x^{4}$

$3 x^{3}$

$24 x^{2}$

$2 x$

$5$

$5 x^{4}$

$10 x^{3}$

$13 x^{3}$

$24 x^{2}$

$13 x^{3}$

$26 x^{2}$

$2 x^{2}$

$2 x$

$2 x^{2}$

$4 x$

$2 x$

$5$

$2 x$

$4$

Step 20

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

				$5 x^{3}$	-	$13 x^{2}$	+	$2 x$	-	$2$
$x$	+	$2$		$5 x^{4}$	-	$3 x^{3}$	-	$24 x^{2}$	+	$2 x$	-	$5$
			-	$5 x^{4}$	-	$10 x^{3}$
					-	$13 x^{3}$	-	$24 x^{2}$
					+	$13 x^{3}$	+	$26 x^{2}$
							+	$2 x^{2}$	+	$2 x$
							-	$2 x^{2}$	-	$4 x$
									-	$2 x$	-	$5$
									+	$2 x$	+	$4$
											-	$1$

Step 21

The quotient is $5 x^{3} - 13 x^{2} + 2 x - 2$ .

$5 x^{3} - 13 x^{2} + 2 x - 2$