x^2-y^2+2x-2y怎么分解因式?

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x^2-y^2+2x-2y怎么分解因式?x^2-y^2+2x-2y怎么分解因式?x^2-y^2+2x-2y怎么分解因式?x^2-y^2+2x-2y=(x+y)(x-y)+2(x-y)=(x-y)(x+

x^2-y^2+2x-2y怎么分解因式?
x^2-y^2+2x-2y怎么分解因式?

x^2-y^2+2x-2y怎么分解因式?
x^2-y^2+2x-2y
=(x+y)(x-y)+2(x-y)
=(x-y)(x+y+2)