x^2-y^2-(x+y)^2,因式分解

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

x^2-y^2-(x+y)^2,因式分解
x^2-y^2-(x+y)^2,因式分解

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