a^m=2,a^n=3 求 a^2n-m=
问题描述：
a^m=2,a^n=3 求 a^2n-m=
答
a^2n-m
=a^n*a^n/a^m
=3*3/2
=4.5
a^m=2,a^n=3 求 a^2n-m=
a^2n-m
=a^n*a^n/a^m
=3*3/2
=4.5