Question

Evaluate the radical expression

Answer 1

\[\sqrt[3]{-216^2}\]

Answer 2

\[2^8 = 216\] and \[(2^{8})^{2} = (2^{2})^{8}\] Substitute 4 for 2 squared. Then, \[\sqrt[3]{(-1)4^{8}}\] Try solving from there... you should get -16.