Question

помогите....................................

Answer 1

$frac{4}{2^{log_{30} 16}}=\ frac{4}{2^{frac{1}{log_{16} 30}}}=\ frac{4}{2^{-{log_{16} 30}}}=\ frac{4}{2^{{log_{2^4} 30^{-1}}}}=\ frac{4}{2^{{frac{1}{4}log_{2} frac{1}{30}}}}=\ frac{4}{2^{log_{2} (frac{1}{30})^{frac{1}{4}}}}}=\ frac{4}{(frac{1}{30})^{frac{1}{4}}}=\ frac{4}{sqrt[4] {30}}$