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Let a and b respectively be the semi-tra...

Let a and b respectively be the semi-transverse and semi-conjugate axes of a hyperbola whose eccentricity satisfies the equation `9e^2 - 18e + 5 = 0`. If `S(5,0)` is a focus and `5x = 9` is the corresponding directrix of this hyperbola, then `a^2 - b^2` is equal to

A

-7

B

-5

C

5

D

7

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The correct Answer is:
A
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DISHA PUBLICATION-CONIC SECTIONS-Exercise-2 : Concept Applicator
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