Finite Math and Applied Calculus (6th Edition)

$$8^{\frac{1}{2}}$$
$$\sqrt 8$$ $$=8^{\frac{1}{2}}$$ $8^{\frac{1}{2}}$ is the exponent form of $\sqrt 8$ because there are no radicals and $8^{\frac{1}{2}}$ is equal to $\sqrt 8$.