因式分解2(x+y)^2-8x^2y^2

分类: 作业答案 • 2021-12-06 20:47:51

问题描述：

答

2(x+y)^2-8x^2y^2
=2[(x+y)²-4x²y²]
=2(x+y+2xy)(x+y-2xy)