Precalculus Examples

$\frac{- 10 t^{4} - 24 t^{3} - 15 t^{2} - 45 t - 27}{2 t^{2} + 6 t + 3}$

Step 1

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

$2 t^{2}$

$6 t$

$3$

$10 t^{4}$

$24 t^{3}$

$15 t^{2}$

$45 t$

$27$

Step 2

Divide the highest order term in the dividend $- 10 t^{4}$ by the highest order term in divisor $2 t^{2}$ .

						-	$5 t^{2}$
	$2 t^{2}$	+	$6 t$	+	$3$	-	$10 t^{4}$	-	$24 t^{3}$	-	$15 t^{2}$	-	$45 t$	-	$27$

Step 3

Multiply the new quotient term by the divisor.

					-	$5 t^{2}$
$2 t^{2}$	+	$6 t$	+	$3$	-	$10 t^{4}$	-	$24 t^{3}$	-	$15 t^{2}$	-	$45 t$	-	$27$
					-	$10 t^{4}$	-	$30 t^{3}$	-	$15 t^{2}$

Step 4

The expression needs to be subtracted from the dividend, so change all the signs in $- 10 t^{4} - 30 t^{3} - 15 t^{2}$

$5 t^{2}$

$2 t^{2}$

$6 t$

$3$

$10 t^{4}$

$24 t^{3}$

$15 t^{2}$

$45 t$

$27$

$10 t^{4}$

$30 t^{3}$

$15 t^{2}$

Step 5

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

$5 t^{2}$

$2 t^{2}$

$6 t$

$3$

$10 t^{4}$

$24 t^{3}$

$15 t^{2}$

$45 t$

$27$

$10 t^{4}$

$30 t^{3}$

$15 t^{2}$

$6 t^{3}$

$0$

Step 6

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

$5 t^{2}$

$2 t^{2}$

$6 t$

$3$

$10 t^{4}$

$24 t^{3}$

$15 t^{2}$

$45 t$

$27$

$10 t^{4}$

$30 t^{3}$

$15 t^{2}$

$6 t^{3}$

$0$

$45 t$

$27$

Step 7

Divide the highest order term in the dividend $6 t^{3}$ by the highest order term in divisor $2 t^{2}$ .

$5 t^{2}$

$3 t$

$2 t^{2}$

$6 t$

$3$

$10 t^{4}$

$24 t^{3}$

$15 t^{2}$

$45 t$

$27$

$10 t^{4}$

$30 t^{3}$

$15 t^{2}$

$6 t^{3}$

$0$

$45 t$

$27$

Step 8

Multiply the new quotient term by the divisor.

$5 t^{2}$

$3 t$

$2 t^{2}$

$6 t$

$3$

$10 t^{4}$

$24 t^{3}$

$15 t^{2}$

$45 t$

$27$

$10 t^{4}$

$30 t^{3}$

$15 t^{2}$

$6 t^{3}$

$0$

$45 t$

$27$

$6 t^{3}$

$18 t^{2}$

$9 t$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $6 t^{3} + 18 t^{2} + 9 t$

$5 t^{2}$

$3 t$

$2 t^{2}$

$6 t$

$3$

$10 t^{4}$

$24 t^{3}$

$15 t^{2}$

$45 t$

$27$

$10 t^{4}$

$30 t^{3}$

$15 t^{2}$

$6 t^{3}$

$0$

$45 t$

$27$

$6 t^{3}$

$18 t^{2}$

$9 t$

Step 10

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

$5 t^{2}$

$3 t$

$2 t^{2}$

$6 t$

$3$

$10 t^{4}$

$24 t^{3}$

$15 t^{2}$

$45 t$

$27$

$10 t^{4}$

$30 t^{3}$

$15 t^{2}$

$6 t^{3}$

$0$

$45 t$

$27$

$6 t^{3}$

$18 t^{2}$

$9 t$

$18 t^{2}$

$54 t$

Step 11

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

					-	$5 t^{2}$	+	$3 t$
$2 t^{2}$	+	$6 t$	+	$3$	-	$10 t^{4}$	-	$24 t^{3}$	-	$15 t^{2}$	-	$45 t$	-	$27$
					+	$10 t^{4}$	+	$30 t^{3}$	+	$15 t^{2}$
							+	$6 t^{3}$	+	$0$	-	$45 t$	-	$27$
							-	$6 t^{3}$	-	$18 t^{2}$	-	$9 t$
									-	$18 t^{2}$	-	$54 t$	-	$27$

Step 12

Divide the highest order term in the dividend $- 18 t^{2}$ by the highest order term in divisor $2 t^{2}$ .

					-	$5 t^{2}$	+	$3 t$	-	$9$
$2 t^{2}$	+	$6 t$	+	$3$	-	$10 t^{4}$	-	$24 t^{3}$	-	$15 t^{2}$	-	$45 t$	-	$27$
					+	$10 t^{4}$	+	$30 t^{3}$	+	$15 t^{2}$
							+	$6 t^{3}$	+	$0$	-	$45 t$	-	$27$
							-	$6 t^{3}$	-	$18 t^{2}$	-	$9 t$
									-	$18 t^{2}$	-	$54 t$	-	$27$

Step 13

Multiply the new quotient term by the divisor.

					-	$5 t^{2}$	+	$3 t$	-	$9$
$2 t^{2}$	+	$6 t$	+	$3$	-	$10 t^{4}$	-	$24 t^{3}$	-	$15 t^{2}$	-	$45 t$	-	$27$
					+	$10 t^{4}$	+	$30 t^{3}$	+	$15 t^{2}$
							+	$6 t^{3}$	+	$0$	-	$45 t$	-	$27$
							-	$6 t^{3}$	-	$18 t^{2}$	-	$9 t$
									-	$18 t^{2}$	-	$54 t$	-	$27$
									-	$18 t^{2}$	-	$54 t$	-	$27$

Step 14

The expression needs to be subtracted from the dividend, so change all the signs in $- 18 t^{2} - 54 t - 27$

					-	$5 t^{2}$	+	$3 t$	-	$9$
$2 t^{2}$	+	$6 t$	+	$3$	-	$10 t^{4}$	-	$24 t^{3}$	-	$15 t^{2}$	-	$45 t$	-	$27$
					+	$10 t^{4}$	+	$30 t^{3}$	+	$15 t^{2}$
							+	$6 t^{3}$	+	$0$	-	$45 t$	-	$27$
							-	$6 t^{3}$	-	$18 t^{2}$	-	$9 t$
									-	$18 t^{2}$	-	$54 t$	-	$27$
									+	$18 t^{2}$	+	$54 t$	+	$27$

Step 15

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

					-	$5 t^{2}$	+	$3 t$	-	$9$
$2 t^{2}$	+	$6 t$	+	$3$	-	$10 t^{4}$	-	$24 t^{3}$	-	$15 t^{2}$	-	$45 t$	-	$27$
					+	$10 t^{4}$	+	$30 t^{3}$	+	$15 t^{2}$
							+	$6 t^{3}$	+	$0$	-	$45 t$	-	$27$
							-	$6 t^{3}$	-	$18 t^{2}$	-	$9 t$
									-	$18 t^{2}$	-	$54 t$	-	$27$
									+	$18 t^{2}$	+	$54 t$	+	$27$
														$0$

Step 16

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

$- 5 t^{2} + 3 t - 9$