Algebra Examples

$\frac{r^{8} \cdot r^{- 8}}{4}$

Step 1

Multiply $r^{8}$ by $r^{- 8}$ by adding the exponents.

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Step 1.1

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

$\frac{r^{8 - 8}}{4}$

Step 1.2

Subtract $8$ from $8$ .

$\frac{r^{0}}{4}$

Step 2

Simplify $r^{0}$ .

$\frac{1}{4}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$\frac{1}{4}$

Decimal Form:

$0.25$