已知x^m=2,x^n=5,求x^3m+x^2n的值?

问题描述:

已知x^m=2,x^n=5,求x^3m+x^2n的值?

x^3m+x^2n
=(x^m)^3+(x^n)^2
=2^3+5^2
=8+25
=33