x(x-y)²-y(y-x)²

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x(x-y)²-y(y-x)²x(x-y)²-y(y-x)²x(x-y)²-y(y-x)²x(x-y)²-y(y-x)²

x(x-y)²-y(y-x)²
x(x-y)²-y(y-x)²

x(x-y)²-y(y-x)²
x(x-y)²-y(y-x)²
=x(x-y)²-y(x-y)²
=(x-y)*(x-y)²
=(x-y)^3