因式分解(x+y)²+3(x+y)

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因式分解(x+y)²+3(x+y)因式分解(x+y)²+3(x+y)因式分解(x+y)²+3(x+y)答:提取公因式x+y:(x+y)²+3(x+y)=(x+y

因式分解(x+y)²+3(x+y)
因式分解(x+y)²+3(x+y)

因式分解(x+y)²+3(x+y)
答:提取公因式x+y:
(x+y)²+3(x+y)
=(x+y)(x+y+3)