(1)a²x²y-axy²(2)6a²b-4a的3次方b的三次方-2ab(3)4a²-12a的2次方(4)3(x+1)-(x+1)²
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![(1)a²x²y-axy²(2)6a²b-4a的3次方b的三次方-2ab(3)4a²-12a的2次方(4)3(x+1)-(x+1)²](/uploads/image/z/1625530-58-0.jpg?t=%281%29a%26%23178%3Bx%26%23178%3By-axy%26%23178%3B%EF%BC%882%EF%BC%896a%26%23178%3Bb-4a%E7%9A%843%E6%AC%A1%E6%96%B9b%E7%9A%84%E4%B8%89%E6%AC%A1%E6%96%B9-2ab%EF%BC%883%EF%BC%894a%26%23178%3B-12a%E7%9A%842%E6%AC%A1%E6%96%B9%EF%BC%884%EF%BC%893%EF%BC%88x%2B1%29-%EF%BC%88x%2B1%29%26%23178%3B)
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(1)a²x²y-axy²(2)6a²b-4a的3次方b的三次方-2ab(3)4a²-12a的2次方(4)3(x+1)-(x+1)²
(1)a²x²y-axy²(2)6a²b-4a的3次方b的三次方-2ab(3)4a²-12a的2次方
(4)3(x+1)-(x+1)²
(1)a²x²y-axy²(2)6a²b-4a的3次方b的三次方-2ab(3)4a²-12a的2次方(4)3(x+1)-(x+1)²
(1)a²x²y-axy²
=axy(ax-y)
(2)6a²b-4a的3次方b的三次方-2ab
=2ab(3a-2a²b²-2)
(3)4a²-12a的2次方
=-8a²
(4)3(x+1)-(x+1)²
=(x+1)(3-x-1)
=(x+1)(2-x)
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