Algebra Examples

$(2 x^{4} - 6 x^{3} + 4 x^{2} - 17) \div (- x^{2} + 2 x - 3)$

Step 1

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

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

Step 2

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

						-	$2 x^{2}$
-	$x^{2}$	+	$2 x$	-	$3$		$2 x^{4}$	-	$6 x^{3}$	+	$4 x^{2}$	+	$0 x$	-	$17$

Step 3

Multiply the new quotient term by the divisor.

$2 x^{2}$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

Step 4

The expression needs to be subtracted from the dividend, so change all the signs in $2 x^{4} - 4 x^{3} + 6 x^{2}$

$2 x^{2}$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

Step 5

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

						-	$2 x^{2}$
-	$x^{2}$	+	$2 x$	-	$3$		$2 x^{4}$	-	$6 x^{3}$	+	$4 x^{2}$	+	$0 x$	-	$17$
						-	$2 x^{4}$	+	$4 x^{3}$	-	$6 x^{2}$
								-	$2 x^{3}$	-	$2 x^{2}$

Step 6

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

$2 x^{2}$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$2 x^{3}$

$2 x^{2}$

$0 x$

Step 7

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

$2 x^{2}$

$2 x$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$2 x^{3}$

$2 x^{2}$

$0 x$

Step 8

Multiply the new quotient term by the divisor.

$2 x^{2}$

$2 x$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$2 x^{3}$

$2 x^{2}$

$0 x$

$2 x^{3}$

$4 x^{2}$

$6 x$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $- 2 x^{3} + 4 x^{2} - 6 x$

$2 x^{2}$

$2 x$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$2 x^{3}$

$2 x^{2}$

$0 x$

$2 x^{3}$

$4 x^{2}$

$6 x$

Step 10

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

$2 x^{2}$

$2 x$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$2 x^{3}$

$2 x^{2}$

$0 x$

$2 x^{3}$

$4 x^{2}$

$6 x$

$6 x^{2}$

$6 x$

Step 11

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

$2 x^{2}$

$2 x$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$2 x^{3}$

$2 x^{2}$

$0 x$

$2 x^{3}$

$4 x^{2}$

$6 x$

$6 x^{2}$

$6 x$

$17$

Step 12

Divide the highest order term in the dividend $- 6 x^{2}$ by the highest order term in divisor $- x^{2}$ .

$2 x^{2}$

$2 x$

$6$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$2 x^{3}$

$2 x^{2}$

$0 x$

$2 x^{3}$

$4 x^{2}$

$6 x$

$6 x^{2}$

$6 x$

$17$

Step 13

Multiply the new quotient term by the divisor.

$2 x^{2}$

$2 x$

$6$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$2 x^{3}$

$2 x^{2}$

$0 x$

$2 x^{3}$

$4 x^{2}$

$6 x$

$6 x^{2}$

$6 x$

$17$

$6 x^{2}$

$12 x$

$18$

Step 14

The expression needs to be subtracted from the dividend, so change all the signs in $- 6 x^{2} + 12 x - 18$

$2 x^{2}$

$2 x$

$6$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$2 x^{3}$

$2 x^{2}$

$0 x$

$2 x^{3}$

$4 x^{2}$

$6 x$

$6 x^{2}$

$6 x$

$17$

$6 x^{2}$

$12 x$

$18$

Step 15

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

$2 x^{2}$

$2 x$

$6$

$x^{2}$

$2 x$

$3$

$2 x^{4}$

$6 x^{3}$

$4 x^{2}$

$0 x$

$17$

$2 x^{4}$

$4 x^{3}$

$6 x^{2}$

$2 x^{3}$

$2 x^{2}$

$0 x$

$2 x^{3}$

$4 x^{2}$

$6 x$

$6 x^{2}$

$6 x$

$17$

$6 x^{2}$

$12 x$

$18$

$6 x$

$1$

Step 16

The quotient is $- 2 x^{2} + 2 x + 6$ .

$- 2 x^{2} + 2 x + 6$