(x-y)²(x+y)²

来源：学生作业帮助网编辑：六六作业网时间：2024/11/22 12:06:13

(x-y)²(x+y)²(x-y)²(x+y)²(x-y)²(x+y)²(x-y)²(x+y)²=[(x+y)(x-y)

(x-y)²(x+y)²
(x-y)²(x+y)²

(x-y)²(x+y)²
(x-y)²(x+y)²
=[(x+y)(x-y)]²
=[x²-y²]²
=x⁴-2x²y²+y⁴