\(a - \frac{1}{a} = 5\sqrt 3 \) হলে, \({a^{2\;}} + \frac{1}{{{a^{2\;}}}}\) = কত ?

\(a - \frac{1}{a} = 5\sqrt 3 \) হলে, \({a^{2\;}} + \frac{1}{{{a^{2\;}}}}\) = কত ?

A \(60\sqrt 3 \)

B 60

C \(70\sqrt 3 \)

D 77

Solution

Correct Answer: Option D