Answer
$\sqrt7$
Work Step by Step
$$\sqrt[4]{7^2}$$
To convert from a radical expression to an expression with a rational exponent, the exponent becomes the numerator, and the index becomes the denominator:
$$=7^\frac{2}{4}$$
Simplify all fractions:
$$=7^\frac{1}{2}$$
Convert back to a radical expression - the numerator becomes the exponent, the denominator becomes the index:
$$=\sqrt7$$
