若X^N=5,Y^N=3则(X^2·Y)^2N=

问题描述:

若X^N=5,Y^N=3则(X^2·Y)^2N=

x^n=5
x^4n=(x^n)^4=625
y^2n=(y^n)^2=9
(x^2y)^2n
=x^4n*y^2n
=625*9
=5625