4-12(x-y)+9(x-y)^2 因式分解

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4-12(x-y)+9(x-y)^2因式分解4-12(x-y)+9(x-y)^2因式分解4-12(x-y)+9(x-y)^2因式分解4-12(x-y)+9(x-y)^2=[2-3(x-y)]^2=(2

4-12(x-y)+9(x-y)^2 因式分解
4-12(x-y)+9(x-y)^2 因式分解

4-12(x-y)+9(x-y)^2 因式分解
4-12(x-y)+9(x-y)^2
=[2-3(x-y)]^2
=(2-3x+3y)^2

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