把多项式x^2-x+y-y^2因式分解,结果为

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2025-02-25 11:09:39
推荐回答(1个)
回答1:

x^2-x+y-y^2
= x²- y² - (x-y)
= (x+y)(x-y) - (x-y)
= (x+y-1 )( x-y)