Images XY 2Y 2X

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Xy 2y 2x. X 2 4xy 4y 2. Х-2xy+y. X 2 +Y 2 =2x+2y+XY. X²/x+y - x²/x²+2xy+y².
X 2 4xy 4y 2. Х-2xy+y. X 2 +Y 2 =2x+2y+XY. X²/x+y - x²/x²+2xy+y².

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