1.

Given that \[x-\frac{1}{x}=5,\] find the value of \[{{x}^{2}}+\frac{1}{{{x}^{2}}}\]

A.  \[-27\]     
B.  \[23\]
C.  \[-9\] 
D.      \[16\]
Answer» D.      \[16\]


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