fen jie yin shix^2(x-y)+(y-x)

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fenjieyinshix^2(x-y)+(y-x)fenjieyinshix^2(x-y)+(y-x)fenjieyinshix^2(x-y)+(y-x)x^2(x-y)+(y-x)=x²

fen jie yin shix^2(x-y)+(y-x)
fen jie yin shix^2(x-y)+(y-x)

fen jie yin shix^2(x-y)+(y-x)
x^2(x-y)+(y-x)
=x²(x-y)-(x-y)
=(x-y)(x²-1)
=(x-y)(x+1)(x-1)

x^2 * (x-y) + (y-x)
=(x-y)(x^2 - 1)
=(x-y)(x+1)(x-1)

=(x-y)(x^2-1)=(x-y)^2(x+y)