x^m+n=91,x^m=13,(x^2)^n等于

问题描述:

x^m+n=91,x^m=13,(x^2)^n等于

x^m+n=91
x^m•x^n=91
13•x^n=91
x^n=7
(x^2)^n
=x^2n
=(x^n)^2
=7^2
=49