(x+y)²-4(x-y-1)因式分解

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(x+y)²-4(x-y-1)因式分解(x+y)²-4(x-y-1)因式分解(x+y)²-4(x-y-1)因式分解(x-y)²-4(x-y-1)=(x-y)&#

(x+y)²-4(x-y-1)因式分解
(x+y)²-4(x-y-1)
因式分解

(x+y)²-4(x-y-1)因式分解
(x-y)²-4(x-y-1)
=(x-y)²-4(x-y)+4
=(x-y-2)² 希望能帮到您