首页/题库/302℃/2022-11-08 17:23:12
已知a^m=2 ,a^n=3,求a^3m+ 2n和a^3m-2n的值
a^(3m+2n)=a^3m*a^2n=(a^m)^3*(a^n)^2=2^3*3^2=72
a^(3m-2n)=(a^m)^3/(a^n)^2=2^3/3^2=8/9