Pre-Algebra Examples

$\frac{k^{4} + 7 k^{3} \cdot (8 k^{2}) + 14 k + 12}{k^{2} + 2}$

Step 1

Expand $k^{4} + 7 k^{3} \cdot (8 k^{2}) + 14 k + 12$ .

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Step 1.1

Remove parentheses.

$\frac{k^{4} + 7 k^{3} \cdot (8 k^{2}) + 14 k + 12}{k^{2} + 2}$

Step 1.2

Move $k^{3}$ .

$\frac{k^{4} + 7 \cdot (8 k^{3} k^{2}) + 14 k + 12}{k^{2} + 2}$

Step 1.3

Multiply $7$ by $8$ .

$\frac{k^{4} + 56 k^{3} k^{2} + 14 k + 12}{k^{2} + 2}$

Step 1.4

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{k^{4} + 56 k^{3 + 2} + 14 k + 12}{k^{2} + 2}$

Step 1.5

Add $3$ and $2$ .

$\frac{k^{4} + 56 k^{5} + 14 k + 12}{k^{2} + 2}$

Step 1.6

Reorder $k^{4}$ and $56 k^{5}$ .

$\frac{56 k^{5} + k^{4} + 14 k + 12}{k^{2} + 2}$

Step 2

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

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

Step 3

Divide the highest order term in the dividend $56 k^{5}$ by the highest order term in divisor $k^{2}$ .

$56 k^{3}$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

Step 4

Multiply the new quotient term by the divisor.

$56 k^{3}$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

Step 5

The expression needs to be subtracted from the dividend, so change all the signs in $56 k^{5} + 0 + 112 k^{3}$

$56 k^{3}$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

Step 6

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

$56 k^{3}$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

Step 7

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

$56 k^{3}$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

Step 8

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

$56 k^{3}$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

Step 9

Multiply the new quotient term by the divisor.

$56 k^{3}$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

Step 10

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

$56 k^{3}$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

Step 11

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

$56 k^{3}$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

$112 k^{3}$

$2 k^{2}$

Step 12

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

$56 k^{3}$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

$112 k^{3}$

$2 k^{2}$

$14 k$

Step 13

Divide the highest order term in the dividend $- 112 k^{3}$ by the highest order term in divisor $k^{2}$ .

$56 k^{3}$

$k^{2}$

$112 k$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

$112 k^{3}$

$2 k^{2}$

$14 k$

Step 14

Multiply the new quotient term by the divisor.

$56 k^{3}$

$k^{2}$

$112 k$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

$112 k^{3}$

$2 k^{2}$

$14 k$

$112 k^{3}$

$0$

$224 k$

Step 15

The expression needs to be subtracted from the dividend, so change all the signs in $- 112 k^{3} + 0 - 224 k$

$56 k^{3}$

$k^{2}$

$112 k$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

$112 k^{3}$

$2 k^{2}$

$14 k$

$112 k^{3}$

$0$

$224 k$

Step 16

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

$56 k^{3}$

$k^{2}$

$112 k$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

$112 k^{3}$

$2 k^{2}$

$14 k$

$112 k^{3}$

$0$

$224 k$

$2 k^{2}$

$238 k$

Step 17

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

$56 k^{3}$

$k^{2}$

$112 k$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

$112 k^{3}$

$2 k^{2}$

$14 k$

$112 k^{3}$

$0$

$224 k$

$2 k^{2}$

$238 k$

$12$

Step 18

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

$56 k^{3}$

$k^{2}$

$112 k$

$2$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

$112 k^{3}$

$2 k^{2}$

$14 k$

$112 k^{3}$

$0$

$224 k$

$2 k^{2}$

$238 k$

$12$

Step 19

Multiply the new quotient term by the divisor.

$56 k^{3}$

$k^{2}$

$112 k$

$2$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

$112 k^{3}$

$2 k^{2}$

$14 k$

$112 k^{3}$

$0$

$224 k$

$2 k^{2}$

$238 k$

$12$

$2 k^{2}$

$0$

$4$

Step 20

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

$56 k^{3}$

$k^{2}$

$112 k$

$2$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

$112 k^{3}$

$2 k^{2}$

$14 k$

$112 k^{3}$

$0$

$224 k$

$2 k^{2}$

$238 k$

$12$

$2 k^{2}$

$0$

$4$

Step 21

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

$56 k^{3}$

$k^{2}$

$112 k$

$2$

$k^{2}$

$0 k$

$2$

$56 k^{5}$

$k^{4}$

$0 k^{3}$

$0 k^{2}$

$14 k$

$12$

$56 k^{5}$

$0$

$112 k^{3}$

$k^{4}$

$112 k^{3}$

$0 k^{2}$

$k^{4}$

$0$

$2 k^{2}$

$112 k^{3}$

$2 k^{2}$

$14 k$

$112 k^{3}$

$0$

$224 k$

$2 k^{2}$

$238 k$

$12$

$2 k^{2}$

$0$

$4$

$238 k$

$16$

Step 22

The final answer is the quotient plus the remainder over the divisor.

$56 k^{3} + k^{2} - 112 k - 2 + \frac{238 k + 16}{k^{2} + 2}$