(x-2y)^2(x^2+4y^2)^2(x+2y)^2计算

问题描述:

(x-2y)^2(x^2+4y^2)^2(x+2y)^2计算

(x-2y)^2(x^2+4y^2)^2(x+2y)^2
=(x^2-4y^2)^2(x^2+4y^2)^2
=x^4-16y^4