2(x-y)²-3(x-y)(-y-x)

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2(x-y)²-3(x-y)(-y-x)

2(x-y)²-3(x-y)(-y-x)
2(x-y)²-3(x-y)(-y-x)

2(x-y)²-3(x-y)(-y-x)

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