A) 34
B) 32
C) 36
D) 38
Correct Answer: A
Solution :
\[x+\frac{1}{x}=6\] \[\Rightarrow \] \[{{\left( x+\frac{1}{x} \right)}^{2}}=36\] \[\Rightarrow \] \[{{x}^{2}}+\frac{1}{{{x}^{2}}}+2\times x\times \frac{1}{x}=36\] \[\Rightarrow \] \[{{x}^{2}}+\frac{1}{{{x}^{2}}}=36-2=34\]You need to login to perform this action.
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