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