Answer:
A and C.
Explanation:
to get rid of the square root & n, you would have to multiply it by n on both sides of the equation, giving you r^n=a.
also to get rid of the square root & n, you can also multiply both sides of a and r by the exponential fraction with n as the denominator:
![\sqrt[n]{a} =r \\(a)^(1)/(n) = r\\a(1)/(n) = r](https://img.qammunity.org/2021/formulas/mathematics/high-school/claem1486bb43fo0e62sb2xii9nrxicc87.png)