The roots can be written as exponents: [tex] \sqrt[x]{ {a}^{y} } = {a}^{ \frac{y}{x} } \\ \\ { \sqrt[x]{a} }^{y} = {a}^{ \frac{y}{x} } [/tex] In this problem, we know that the root is a square root because there is no number on the left side of the root.
So we could write that as: [tex] {x}^{ \frac{5}{2} } [/tex]