You may want to review fractional exponents first.

You can also rewrite a fractional exponent with a root. (This is
helpful if you need to explain your answer to someone who doesn't
understand about fractional exponents.) For example, suppose you
have (−*x* + *y* −
2)^{−1 ⁄ 5}. The numerator of
the exponent is −1 and the denominator is 5, so you rewrite
it as ^{5}√((−*x* + *y* −
2)^{−1}).

Of course, if the numerator is 1, you don't need to write it in
the final answer. For example, if you had (−*x*
+ *y* − 2)^{1 ⁄ 5}, you
would rewrite it as ^{5}√(−*x* + *y*
− 2).

Again, for these problems, you don't need to do any other simplifications; we're just practicing going between roots and fractional exponents.