Question

помогите с логорифмом

Answer 1

$log_{sqrt[4]{8}}8^4=log_{8^{frac{1}{4}}}8^4=frac{4}{frac{1}{4}}=16$

Answer 2

$log_{a^x}b^y = frac{y}{x} log_ab\\ log_{8^ frac{1}{4} }8^4= frac{4}{ frac{1}{4} } log_88=4*4=16$