A) 6
B) 12
C) 8
D) 9
Correct Answer: C
Solution :
\[\because \]\[{{x}^{2}}+\frac{1}{{{x}^{2}}}=66=64+2\] \[{{x}^{2}}+\frac{1}{{{x}^{2}}}-2=64\] \[{{\left[ x-\frac{1}{x} \right]}^{2}}={{(8)}^{2}}\Rightarrow x-\frac{1}{x}=8\]You need to login to perform this action.
You will be redirected in
3 sec