Pre-Algebra Examples

$\frac{z^{4} z^{6}}{z^{5} z - 3}$

Step 1

Expand $z^{4} z^{6}$ .

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Step 1.1

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

$\frac{z^{4 + 6}}{z^{5} z - 3}$

Step 1.2

Add $4$ and $6$ .

$\frac{z^{10}}{z^{5} z - 3}$

Step 2

Expand $z^{5} z - 3$ .

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Step 2.1

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

$\frac{z^{10}}{z^{5 + 1} - 3}$

Step 2.2

Add $5$ and $1$ .

$\frac{z^{10}}{z^{6} - 3}$

Step 3

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

$z^{6}$

$0 z^{5}$

$0 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$3$

$z^{10}$

$0 z^{9}$

$0 z^{8}$

$0 z^{7}$

$0 z^{6}$

$0 z^{5}$

$0 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$0$

Step 4

Divide the highest order term in the dividend $z^{10}$ by the highest order term in divisor $z^{6}$ .

$z^{4}$

$z^{6}$

$0 z^{5}$

$0 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$3$

$z^{10}$

$0 z^{9}$

$0 z^{8}$

$0 z^{7}$

$0 z^{6}$

$0 z^{5}$

$0 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$0$

Step 5

Multiply the new quotient term by the divisor.

$z^{4}$

$z^{6}$

$0 z^{5}$

$0 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$3$

$z^{10}$

$0 z^{9}$

$0 z^{8}$

$0 z^{7}$

$0 z^{6}$

$0 z^{5}$

$0 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$0$

$z^{10}$

$0$

$3 z^{4}$

Step 6

The expression needs to be subtracted from the dividend, so change all the signs in $z^{10} + 0 + 0 + 0 + 0 + 0 - 3 z^{4}$

$z^{4}$

$z^{6}$

$0 z^{5}$

$0 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$3$

$z^{10}$

$0 z^{9}$

$0 z^{8}$

$0 z^{7}$

$0 z^{6}$

$0 z^{5}$

$0 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$0$

$z^{10}$

$0$

$3 z^{4}$

Step 7

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

$z^{4}$

$z^{6}$

$0 z^{5}$

$0 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$3$

$z^{10}$

$0 z^{9}$

$0 z^{8}$

$0 z^{7}$

$0 z^{6}$

$0 z^{5}$

$0 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$0$

$z^{10}$

$0$

$3 z^{4}$

Step 8

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

$z^{4}$

$z^{6}$

$0 z^{5}$

$0 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$3$

$z^{10}$

$0 z^{9}$

$0 z^{8}$

$0 z^{7}$

$0 z^{6}$

$0 z^{5}$

$0 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$0$

$z^{10}$

$0$

$3 z^{4}$

$0 z^{3}$

$0 z^{2}$

$0 z$

$0$

Step 9

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

$z^{4} + \frac{3 z^{4}}{z^{6} - 3}$