Answer:
![\sqrt[2]{8}](https://tex.z-dn.net/?f=%5Csqrt%5B2%5D%7B8%7D)
Step-by-step explanation:
Remember the basic format of a fraction raised to a fractional exponent:
![a^\frac{b}{c}=\sqrt[b]{a^c}](https://tex.z-dn.net/?f=a%5E%5Cfrac%7Bb%7D%7Bc%7D%3D%5Csqrt%5Bb%5D%7Ba%5Ec%7D)
Some terms to keep in mind are the following:
(a) is the base
(c) is the exponent
(b) is the index
Apply this information to the given problem:

In this case, (2) is the base, and the index; (3) is the exponent. Apply the general format of the fraction exponent to change the expression from an exponent to a radical.
![2^\frac{3}{2}=\sqrt[2]{2^3}](https://tex.z-dn.net/?f=2%5E%5Cfrac%7B3%7D%7B2%7D%3D%5Csqrt%5B2%5D%7B2%5E3%7D)
Simplify the term under the radical:
![\sqrt[2]{2^3}=\sqrt[2]{8}](https://tex.z-dn.net/?f=%5Csqrt%5B2%5D%7B2%5E3%7D%3D%5Csqrt%5B2%5D%7B8%7D)