分解因式:(1)3a²b+6ab²(2)(x+y)²-3(x+y)
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分解因式:(1)3a²b+6ab²(2)(x+y)²-3(x+y)
(1)3a²b+6ab²
=3ab(a+2b)
(2)(x+y)²-3(x+y)
=(x+y)(x+y-3)
分解因式:(1)3a²b+6ab²(2)(x+y)²-3(x+y)
(1)3a²b+6ab²
=3ab(a+2b)
(2)(x+y)²-3(x+y)
=(x+y)(x+y-3)