举报
胡杨88
(x-2y)^2(x^2-4y^2)^2(x+2y)^2 =[(x-2y)(x+2y)]²(x²-4y²)² =(x²-4y²)²(x²-4y²)² =(x²-4y²)^4 补充问题解答如下: (x-2y)^2(x^2+4y^2)^2(x+2y)^2 =(x-2y)^2(x+2y)^2(x^2+4y^2)^2 =[(x-2y)(x+2y)]^2(x^2+4y^2)^2 =(x^2-4y^2)^2 (x^2+4y^2)^2 =[(x^2-4y^2) (x^2+4y^2)]^2 =(x^4-16y^4)^2