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If e(1) and e(2) are the eccentricities...

If `e_(1)` and `e_(2)` are the eccentricities of the hyperbolas xy=9 and `x^(2)-y^(2)=25` then `(e_(1),e_(2))` lie on a circle `c_(1)` with centre origin then `(radius )^(2)` of the director circle of `c_(1)` is

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