(x-y)的平方-(y-x)怎么做啊?

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(x-y)的平方-(y-x)怎么做啊?(x-y)的平方-(y-x)怎么做啊?(x-y)的平方-(y-x)怎么做啊?(x-y)²-(y-x)=(x-y)²+(x-y)=(x-y)(x

(x-y)的平方-(y-x)怎么做啊?
(x-y)的平方-(y-x)怎么做啊?

(x-y)的平方-(y-x)怎么做啊?
(x-y)²-(y-x)
=(x-y)²+(x-y)
=(x-y)(x-y+1)

原式=(x-y)²+(x-y)
=(x-y)[(x-y)+1]
=(x-y)(x-y+1)

(x-y)^2-(y-x)
=(x-y)^2+(x-y)
=(x-y)(x-y+1)