14. (\(\sqrt[8]{64}\))^{-4}

\((\sqrt[8]{64})^{-4} = (64^{\frac{1}{8}})^{-4} = 64^{-\frac{4}{8}} = 64^{-\frac{1}{2}} = \frac{1}{64^{\frac{1}{2}}} = \frac{1}{\sqrt{64}} = \frac{1}{8} = 0.125\)

E. 0,125