Question

x的平方-y的平方-x+y=

Answer 1

x平方减y平方减x加y
=(x-y)(x+y)-(x-y)
=(x-y)(x+y-1)

帮助你就是我的快乐，为梦想而生团队祝你学习进步，不理解请追问，理解请及时采纳！(*^__^*)

Answer 2

解
x²-y²-x+y
=(x²-y²)-(x-y)
=(x-y)(x+y)-(x-y)
=(x-y)(x+y-1)