a^n=3 b^m=5,求a^3n+b^2m

问题描述:

a^n=3 b^m=5,求a^3n+b^2m

a^3n=(a^n)^3=3^3=27,
b^2m=(b^m)^2=5^2=25,
所以a^3n+b^2m=27+25=52.