A) \[9\]
B) \[11\]
C) \[7\]
D) \[8\]
Correct Answer: C
Solution :
\[{{\left( x+\frac{1}{x} \right)}^{2}}={{3}^{2}}\Rightarrow {{x}^{2}}+\frac{1}{{{x}^{2}}}=7\]
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