Precalculus Examples

$n = 4$ , $a = 81$

Step 1

Use the formula $\sqrt[n]{a}$ to find the Nth root.

$\sqrt[4]{81}$

Step 2

Rewrite $81$ as $3^{4}$ .

$\sqrt[4]{3^{4}}$

Step 3

Pull terms out from under the radical, assuming positive real numbers.

$3$