作业帮因式分解：(x-y)(3x-7y)²-4(x-y)(x+y)²
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/15 11:32:12
x){:{=O;^,_~,
JM
]JM5eCs k]X6L&H,}v6HB[h4RX$eUFF0Q6BHVM 6yvP_ڀ9Zt Ӊβ1 8y
因式分解：(x-y)(3x-7y)²-4(x-y)(x+y)²
因式分解：(x-y)(3x-7y)²-4(x-y)(x+y)²
因式分解：(x-y)(3x-7y)²-4(x-y)(x+y)²
(x-y)(3x-7y)²-4(x-y)(x+y)²
=(x-y)[(3x-7y)²-4(x+y)²]
=(x-y)(3x-7y-2x-2y)(3x-7y+2x+2y)
=(x-y)(x-9y)(5x-5y)
=5(x-y)²(x-9y)
5*（x-y）*（x-y）*（x-9y）