2(x-y)(x+y)-(x-y)^2的提公因式
问题描述:
2(x-y)(x+y)-(x-y)^2的提公因式
答
=(x-y)[2(x+y)-(x-y)]
=(x-y)(x+3y)
2(x-y)(x+y)-(x-y)^2的提公因式
=(x-y)[2(x+y)-(x-y)]
=(x-y)(x+3y)