Question

9^4м*9^-2м при м=1/4

Answer 1

$9^{4m}*9^{-2m}=9^{4m-2m}=9^{2m} \\m=frac{1}{4}Rightarrow 9^{2*frac{1}{4}}=9^{frac{1}{2}}=sqrt{9}=3$