分解因式x^2-2xy+y^2-3x+3y-18

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分解因式x^2-2xy+y^2-3x+3y-18分解因式x^2-2xy+y^2-3x+3y-18分解因式x^2-2xy+y^2-3x+3y-18x^2-2xy+y^2-3x+3y-18=(x-y)^2

分解因式x^2-2xy+y^2-3x+3y-18
分解因式x^2-2xy+y^2-3x+3y-18

分解因式x^2-2xy+y^2-3x+3y-18
x^2-2xy+y^2-3x+3y-18=(x-y)^2-3(x-y)-18=(x-y-6)(x-y+3)