Pre-Algebra Examples

$\frac{t^{4} + t^{3} + 2 t^{2} - t - 3}{t + 1}$

Step 1

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

$t$

$1$

$t^{4}$

$t^{3}$

$2 t^{2}$

$t$

$3$

Step 2

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

$t^{3}$

$t$

$1$

$t^{4}$

$t^{3}$

$2 t^{2}$

$t$

$3$

Step 3

Multiply the new quotient term by the divisor.

$t^{3}$

$t$

$1$

$t^{4}$

$t^{3}$

$2 t^{2}$

$t$

$3$

$t^{4}$

$t^{3}$

Step 4

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

$t^{3}$

$t$

$1$

$t^{4}$

$t^{3}$

$2 t^{2}$

$t$

$3$

$t^{4}$

$t^{3}$

Step 5

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

$t^{3}$

$t$

$1$

$t^{4}$

$t^{3}$

$2 t^{2}$

$t$

$3$

$t^{4}$

$t^{3}$

$0$

Step 6

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

$t^{3}$

$t$

$1$

$t^{4}$

$t^{3}$

$2 t^{2}$

$t$

$3$

$t^{4}$

$t^{3}$

$0$

$2 t^{2}$

$t$

Step 7

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

$t^{3}$

$0 t^{2}$

$2 t$

$t$

$1$

$t^{4}$

$t^{3}$

$2 t^{2}$

$t$

$3$

$t^{4}$

$t^{3}$

$0$

$2 t^{2}$

$t$

Step 8

Multiply the new quotient term by the divisor.

$t^{3}$

$0 t^{2}$

$2 t$

$t$

$1$

$t^{4}$

$t^{3}$

$2 t^{2}$

$t$

$3$

$t^{4}$

$t^{3}$

$0$

$2 t^{2}$

$t$

$2 t^{2}$

$2 t$

Step 9

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

$t^{3}$

$0 t^{2}$

$2 t$

$t$

$1$

$t^{4}$

$t^{3}$

$2 t^{2}$

$t$

$3$

$t^{4}$

$t^{3}$

$0$

$2 t^{2}$

$t$

$2 t^{2}$

$2 t$

Step 10

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

$t^{3}$

$0 t^{2}$

$2 t$

$t$

$1$

$t^{4}$

$t^{3}$

$2 t^{2}$

$t$

$3$

$t^{4}$

$t^{3}$

$0$

$2 t^{2}$

$t$

$2 t^{2}$

$2 t$

$3 t$

Step 11

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

$t^{3}$

$0 t^{2}$

$2 t$

$t$

$1$

$t^{4}$

$t^{3}$

$2 t^{2}$

$t$

$3$

$t^{4}$

$t^{3}$

$0$

$2 t^{2}$

$t$

$2 t^{2}$

$2 t$

$3 t$

$3$

Step 12

Divide the highest order term in the dividend $- 3 t$ by the highest order term in divisor $t$ .

				$t^{3}$	+	$0 t^{2}$	+	$2 t$	-	$3$
$t$	+	$1$		$t^{4}$	+	$t^{3}$	+	$2 t^{2}$	-	$t$	-	$3$
			-	$t^{4}$	-	$t^{3}$
						$0$	+	$2 t^{2}$	-	$t$
							-	$2 t^{2}$	-	$2 t$
									-	$3 t$	-	$3$

Step 13

Multiply the new quotient term by the divisor.

				$t^{3}$	+	$0 t^{2}$	+	$2 t$	-	$3$
$t$	+	$1$		$t^{4}$	+	$t^{3}$	+	$2 t^{2}$	-	$t$	-	$3$
			-	$t^{4}$	-	$t^{3}$
						$0$	+	$2 t^{2}$	-	$t$
							-	$2 t^{2}$	-	$2 t$
									-	$3 t$	-	$3$
									-	$3 t$	-	$3$

Step 14

The expression needs to be subtracted from the dividend, so change all the signs in $- 3 t - 3$

				$t^{3}$	+	$0 t^{2}$	+	$2 t$	-	$3$
$t$	+	$1$		$t^{4}$	+	$t^{3}$	+	$2 t^{2}$	-	$t$	-	$3$
			-	$t^{4}$	-	$t^{3}$
						$0$	+	$2 t^{2}$	-	$t$
							-	$2 t^{2}$	-	$2 t$
									-	$3 t$	-	$3$
									+	$3 t$	+	$3$

Step 15

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

				$t^{3}$	+	$0 t^{2}$	+	$2 t$	-	$3$
$t$	+	$1$		$t^{4}$	+	$t^{3}$	+	$2 t^{2}$	-	$t$	-	$3$
			-	$t^{4}$	-	$t^{3}$
						$0$	+	$2 t^{2}$	-	$t$
							-	$2 t^{2}$	-	$2 t$
									-	$3 t$	-	$3$
									+	$3 t$	+	$3$
												$0$

Step 16

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

$t^{3} + 0 t^{2} + 2 t - 3$