因式分解x^2+2x-2xy-2y-3y^2+1

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因式分解x^2+2x-2xy-2y-3y^2+1因式分解x^2+2x-2xy-2y-3y^2+1因式分解x^2+2x-2xy-2y-3y^2+1x^2+2x-2xy-2y-3y^2+1=x^2-2xy

因式分解x^2+2x-2xy-2y-3y^2+1
因式分解x^2+2x-2xy-2y-3y^2+1

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

x^2+2X+1-(3y^2+2Xy+2y)=(X+1)^2-y(3y+2X+2)