Question

a^9·(a^-3)^4. при а=1/4

Answer 1

$a^{9}*(a^{-3})^{4}=a^{9}a^{-12}=a^{-3}= frac{1}{a^{3}} \ frac{1}{( frac{1}{4})^{3}}= frac{1}{ frac{1}{64}}=64$