因式分解x^2-4xy+3y^2-x-y-2

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因式分解x^2-4xy+3y^2-x-y-2因式分解x^2-4xy+3y^2-x-y-2因式分解x^2-4xy+3y^2-x-y-2原式=x^2-(4y+1)x+3y^2-y-2=x^2-(4y+1)

因式分解x^2-4xy+3y^2-x-y-2
因式分解x^2-4xy+3y^2-x-y-2

因式分解x^2-4xy+3y^2-x-y-2
原式=x^2-(4y+1)x+3y^2-y-2
=x^2-(4y+1)x+(y-1)(3y+2)
=(x-y+1)(x-3y+2)

x^2-4xy+3y^2-x-y-2
=(x-y)(x-3y)-x-y-2
=(x-y+1)(x-3y-2)

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