如果x^2-y^2=4,那么(x-y)^2*(x+y)^2的结果是?

问题描述:

如果x^2-y^2=4,那么(x-y)^2*(x+y)^2的结果是?

(x-y)²(x+y)²=[(x-y)(x+y)]²=(x²-y²)²=16.