因式分解:4+12(x-y)+9(x-y)^2
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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)^24+12(x-y)+9(x-y)^2=(2+3x-3y)^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
4+12(x-y)+9(x-y)^2
=(2+3x-3y)^2
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