Answer
See below
Work Step by Step
Rewrite $16$ as a power of $4$:
$$(\frac{16^{1/2}}{4^{1/2}})^5=[\frac{(4^2)^{1/2}}{4^{1/2}}]^5=(\frac{4}{4^{1/2}})^5=(4^{1/2})^5=2^5=32$$
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