Divide Using Long Polynomial Division (-4t^4+6t^3+10t^2+69t+45)/(2t^2-6t-5)

$\frac{- 4 t^{4} + 6 t^{3} + 10 t^{2} + 69 t + 45}{2 t^{2} - 6 t - 5}$

Step 1

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

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

Step 2

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

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

Step 3

Multiply the new quotient term by the divisor.

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

$4 t^{4}$

$12 t^{3}$

$10 t^{2}$

Step 4

The expression needs to be subtracted from the dividend, so change all the signs in $- 4 t^{4} + 12 t^{3} + 10 t^{2}$

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

$4 t^{4}$

$12 t^{3}$

$10 t^{2}$

Step 5

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

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

$4 t^{4}$

$12 t^{3}$

$10 t^{2}$

$6 t^{3}$

$0$

Step 6

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

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

$4 t^{4}$

$12 t^{3}$

$10 t^{2}$

$6 t^{3}$

$0$

$69 t$

$45$

Step 7

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

$2 t^{2}$

$3 t$

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

$4 t^{4}$

$12 t^{3}$

$10 t^{2}$

$6 t^{3}$

$0$

$69 t$

$45$

Step 8

Multiply the new quotient term by the divisor.

$2 t^{2}$

$3 t$

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

$4 t^{4}$

$12 t^{3}$

$10 t^{2}$

$6 t^{3}$

$0$

$69 t$

$45$

$6 t^{3}$

$18 t^{2}$

$15 t$

Step 9

The expression needs to be subtracted from the dividend, so change all the signs in $- 6 t^{3} + 18 t^{2} + 15 t$

$2 t^{2}$

$3 t$

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

$4 t^{4}$

$12 t^{3}$

$10 t^{2}$

$6 t^{3}$

$0$

$69 t$

$45$

$6 t^{3}$

$18 t^{2}$

$15 t$

Step 10

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

$2 t^{2}$

$3 t$

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

$4 t^{4}$

$12 t^{3}$

$10 t^{2}$

$6 t^{3}$

$0$

$69 t$

$45$

$6 t^{3}$

$18 t^{2}$

$15 t$

$18 t^{2}$

$54 t$

Step 11

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

$2 t^{2}$

$3 t$

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

$4 t^{4}$

$12 t^{3}$

$10 t^{2}$

$6 t^{3}$

$0$

$69 t$

$45$

$6 t^{3}$

$18 t^{2}$

$15 t$

$18 t^{2}$

$54 t$

$45$

Step 12

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

$2 t^{2}$

$3 t$

$9$

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

$4 t^{4}$

$12 t^{3}$

$10 t^{2}$

$6 t^{3}$

$0$

$69 t$

$45$

$6 t^{3}$

$18 t^{2}$

$15 t$

$18 t^{2}$

$54 t$

$45$

Step 13

Multiply the new quotient term by the divisor.

$2 t^{2}$

$3 t$

$9$

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

$4 t^{4}$

$12 t^{3}$

$10 t^{2}$

$6 t^{3}$

$0$

$69 t$

$45$

$6 t^{3}$

$18 t^{2}$

$15 t$

$18 t^{2}$

$54 t$

$45$

$18 t^{2}$

$54 t$

$45$

Step 14

The expression needs to be subtracted from the dividend, so change all the signs in $- 18 t^{2} + 54 t + 45$

$2 t^{2}$

$3 t$

$9$

$2 t^{2}$

$6 t$

$5$

$4 t^{4}$

$6 t^{3}$

$10 t^{2}$

$69 t$

$45$

$4 t^{4}$

$12 t^{3}$

$10 t^{2}$

$6 t^{3}$

$0$

$69 t$

$45$

$6 t^{3}$

$18 t^{2}$

$15 t$

$18 t^{2}$

$54 t$

$45$

$18 t^{2}$

$54 t$

$45$

Step 15

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

					-	$2 t^{2}$	-	$3 t$	-	$9$
$2 t^{2}$	-	$6 t$	-	$5$	-	$4 t^{4}$	+	$6 t^{3}$	+	$10 t^{2}$	+	$69 t$	+	$45$
					+	$4 t^{4}$	-	$12 t^{3}$	-	$10 t^{2}$
							-	$6 t^{3}$	+	$0$	+	$69 t$	+	$45$
							+	$6 t^{3}$	-	$18 t^{2}$	-	$15 t$
									-	$18 t^{2}$	+	$54 t$	+	$45$
									+	$18 t^{2}$	-	$54 t$	-	$45$
														$0$

Step 16

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

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

Divide Using Long Polynomial Division (-4t^4+6t^3+10t^2+69t+45)/(2t^2-6t-5)

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