Images 9X4 12X2Y 4Y2

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9x4 12x2y 4y2. X^2/A^2-Y^2/B^2. Y=1/2x2. X^2+Y^2=A^2. (2x+1)(х-1) (3-y^2)(y-4).
X^2/A^2-Y^2/B^2. Y=1/2x2. X^2+Y^2=A^2. (2x+1)(х-1) (3-y^2)(y-4).

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