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A circle cuts the rectangular hyperbola xy=1 in points (xr,yr),r=1,2,3,4. If x1x2x3x4=a, y1y2y3y4=b, then a2+b2=

Answer» A circle cuts the rectangular hyperbola xy=1 in points (xr,yr),r=1,2,3,4. If x1x2x3x4=a, y1y2y3y4=b, then a2+b2=


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