Images Y 2Y 3Y 2X

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Y 2y 3y 2x. X2+2xy+y2. X2+XY+y2. X2 XY y2 формула. XY Y XTG Y X П/2.
X2+2xy+y2. X2+XY+y2. X2 XY y2 формула. XY Y XTG Y X П/2.

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