来自毛新业的问题
因式分解(x2-y2)(x+y)-(x-y)?
因式分解(x2-y2)(x+y)-(x-y)?
1回答
2020-06-1317:02
因式分解(x2-y2)(x+y)-(x-y)?
因式分解(x2-y2)(x+y)-(x-y)?
(x2-y2)(x+y)-(x-y)
=(x+y)(x-y)(x+y)-(x-y)
=(x-y)[(x+y)^2-1]
=(x-y)(x+y+1)(x+y-1)