A) 0
B) 3
C) \[3\sqrt{3}\]
D) \[9\sqrt{3}\]
Correct Answer: A
Solution :
[a] \[{{a}^{3}}+\frac{1}{{{a}^{3}}}={{\left( a+\frac{1}{a} \right)}^{3}}-3\left( a+\frac{1}{a} \right)\] \[={{(\sqrt{3\,})}^{3}}-3.\,\,\sqrt{3}=3\sqrt{3}-3\sqrt{3}=0\]You need to login to perform this action.
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