初二因式分解a²(x-y)-b²(x-y)
问题描述:
初二因式分解a²(x-y)-b²(x-y)
答
(x-y)(a-b)(a+b)
答
a²(x-y)-b²(x-y)
=(x-y)(a²-b²)
=(x-y)(a-b)(a+b)