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1. $\frac{x^{2}}{9} + \frac{y^{2}}{4} = 1$

Answer: Option C

Explanation:

e = \sqrt{1 - \frac{2^{2}}{3^{2}}} = \sqrt{\frac{5}{3^{2}}} = \frac{\sqrt{5}}{3} ফোকাসদ্বয়ের মধ্যবর্তী দুরত্ব =2ae=2×3× \frac{\sqrt{5}}{3} =2 \sqrt{5}

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