Question

All of the following expressions are equal except2^-31/8 2^1/2^48

Answer 1

Answer:

(D)8

Explanation:

$\begin{gathered} 2^{-3}=\frac{1}{2^3}=\frac{1}{8} \\ \frac{2^1}{2^4}=\frac{2}{16}=\frac{1}{8} \end{gathered}$

Therefore, every of the option is equal to 1/8 except 8.

The correct choice is D.