Photos Y 2X2 4X

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Y 2x2 4x. (X^2-Y^2)/(1-X^2). Y=X^2+1/X^2-1. Y2-y1/x2-x1. X2 x1 2 y2 y1 2.
(X^2-Y^2)/(1-X^2). Y=X^2+1/X^2-1. Y2-y1/x2-x1. X2 x1 2 y2 y1 2.

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