Precalculus Examples

$a^{8} + 7 a^{- \frac{3}{5}}$

Step 1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$a^{8} + 7 \frac{1}{a^{\frac{3}{5}}}$

Step 2

Apply the rule $x^{\frac{m}{n}} = \sqrt[n]{x^{m}}$ to rewrite the exponentiation as a radical.

$a^{8} + 7 \frac{1}{\sqrt[5]{a^{3}}}$