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A normal is drawn to the ellipse x2(a2+4a+5)2+y2(a2+4)2=1 whose center is at origin O. If the maximum radius of the circle ,centered at the origin and touching the normal is 25 then the positive value of a is

Answer» A normal is drawn to the ellipse x2(a2+4a+5)2+y2(a2+4)2=1 whose center is at origin O. If the maximum radius of the circle ,centered at the origin and touching the normal is 25 then the positive value of a is


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