x = \(\sqrt 3 + \sqrt 2 \) হলে, \({x^{3\;}} + \frac{1}{{{x^{3\;}}}}\) এর মান কত ?
A \(18\sqrt 3 \)
B \(19\sqrt 3 \)
C \(20\sqrt 3 \)
D \(21\sqrt 3 \)
Correct Answer: Option A
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