Divide Using Long Polynomial Division (3x^4+9x^3-5x^2-6x+2)/(3x^2-2)

$\frac{3 x^{4} + 9 x^{3} - 5 x^{2} - 6 x + 2}{3 x^{2} - 2}$

Step 1

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

$3 x^{2}$

$0 x$

$2$

$3 x^{4}$

$9 x^{3}$

$5 x^{2}$

$6 x$

$2$

Step 2

Divide the highest order term in the dividend $3 x^{4}$ by the highest order term in divisor $3 x^{2}$ .

$x^{2}$

$3 x^{2}$

$0 x$

$2$

$3 x^{4}$

$9 x^{3}$

$5 x^{2}$

$6 x$

$2$

Step 3

Multiply the new quotient term by the divisor.

$x^{2}$

$3 x^{2}$

$0 x$

$2$

$3 x^{4}$

$9 x^{3}$

$5 x^{2}$

$6 x$

$2$

$3 x^{4}$

$0$

$2 x^{2}$

Step 4

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

$x^{2}$

$3 x^{2}$

$0 x$

$2$

$3 x^{4}$

$9 x^{3}$

$5 x^{2}$

$6 x$

$2$

$3 x^{4}$

$0$

$2 x^{2}$

Step 5

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

$x^{2}$

$3 x^{2}$

$0 x$

$2$

$3 x^{4}$

$9 x^{3}$

$5 x^{2}$

$6 x$

$2$

$3 x^{4}$

$0$

$2 x^{2}$

$9 x^{3}$

$3 x^{2}$

Step 6

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

$x^{2}$

$3 x^{2}$

$0 x$

$2$

$3 x^{4}$

$9 x^{3}$

$5 x^{2}$

$6 x$

$2$

$3 x^{4}$

$0$

$2 x^{2}$

$9 x^{3}$

$3 x^{2}$

$6 x$

Step 7

Divide the highest order term in the dividend $9 x^{3}$ by the highest order term in divisor $3 x^{2}$ .

$x^{2}$

$3 x$

$3 x^{2}$

$0 x$

$2$

$3 x^{4}$

$9 x^{3}$

$5 x^{2}$

$6 x$

$2$

$3 x^{4}$

$0$

$2 x^{2}$

$9 x^{3}$

$3 x^{2}$

$6 x$

Step 8

Multiply the new quotient term by the divisor.

$x^{2}$

$3 x$

$3 x^{2}$

$0 x$

$2$

$3 x^{4}$

$9 x^{3}$

$5 x^{2}$

$6 x$

$2$

$3 x^{4}$

$0$

$2 x^{2}$

$9 x^{3}$

$3 x^{2}$

$6 x$

$9 x^{3}$

$0$

$6 x$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $9 x^{3} + 0 - 6 x$

$x^{2}$

$3 x$

$3 x^{2}$

$0 x$

$2$

$3 x^{4}$

$9 x^{3}$

$5 x^{2}$

$6 x$

$2$

$3 x^{4}$

$0$

$2 x^{2}$

$9 x^{3}$

$3 x^{2}$

$6 x$

$9 x^{3}$

$0$

$6 x$

Step 10

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

$x^{2}$

$3 x$

$3 x^{2}$

$0 x$

$2$

$3 x^{4}$

$9 x^{3}$

$5 x^{2}$

$6 x$

$2$

$3 x^{4}$

$0$

$2 x^{2}$

$9 x^{3}$

$3 x^{2}$

$6 x$

$9 x^{3}$

$0$

$6 x$

$3 x^{2}$

$0$

Step 11

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

$x^{2}$

$3 x$

$3 x^{2}$

$0 x$

$2$

$3 x^{4}$

$9 x^{3}$

$5 x^{2}$

$6 x$

$2$

$3 x^{4}$

$0$

$2 x^{2}$

$9 x^{3}$

$3 x^{2}$

$6 x$

$9 x^{3}$

$0$

$6 x$

$3 x^{2}$

$0$

$2$

Step 12

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

						$x^{2}$	+	$3 x$	-	$1$
$3 x^{2}$	+	$0 x$	-	$2$		$3 x^{4}$	+	$9 x^{3}$	-	$5 x^{2}$	-	$6 x$	+	$2$
					-	$3 x^{4}$	-	$0$	+	$2 x^{2}$
							+	$9 x^{3}$	-	$3 x^{2}$	-	$6 x$
							-	$9 x^{3}$	-	$0$	+	$6 x$
									-	$3 x^{2}$	+	$0$	+	$2$

Step 13

Multiply the new quotient term by the divisor.

						$x^{2}$	+	$3 x$	-	$1$
$3 x^{2}$	+	$0 x$	-	$2$		$3 x^{4}$	+	$9 x^{3}$	-	$5 x^{2}$	-	$6 x$	+	$2$
					-	$3 x^{4}$	-	$0$	+	$2 x^{2}$
							+	$9 x^{3}$	-	$3 x^{2}$	-	$6 x$
							-	$9 x^{3}$	-	$0$	+	$6 x$
									-	$3 x^{2}$	+	$0$	+	$2$
									-	$3 x^{2}$	+	$0$	+	$2$

Step 14

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

						$x^{2}$	+	$3 x$	-	$1$
$3 x^{2}$	+	$0 x$	-	$2$		$3 x^{4}$	+	$9 x^{3}$	-	$5 x^{2}$	-	$6 x$	+	$2$
					-	$3 x^{4}$	-	$0$	+	$2 x^{2}$
							+	$9 x^{3}$	-	$3 x^{2}$	-	$6 x$
							-	$9 x^{3}$	-	$0$	+	$6 x$
									-	$3 x^{2}$	+	$0$	+	$2$
									+	$3 x^{2}$	-	$0$	-	$2$

Step 15

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

						$x^{2}$	+	$3 x$	-	$1$
$3 x^{2}$	+	$0 x$	-	$2$		$3 x^{4}$	+	$9 x^{3}$	-	$5 x^{2}$	-	$6 x$	+	$2$
					-	$3 x^{4}$	-	$0$	+	$2 x^{2}$
							+	$9 x^{3}$	-	$3 x^{2}$	-	$6 x$
							-	$9 x^{3}$	-	$0$	+	$6 x$
									-	$3 x^{2}$	+	$0$	+	$2$
									+	$3 x^{2}$	-	$0$	-	$2$
														$0$

Step 16

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

$x^{2} + 3 x - 1$

Divide Using Long Polynomial Division (3x^4+9x^3-5x^2-6x+2)/(3x^2-2)

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