1.

If \[x=2-\sqrt{3}\]then the value of \[{{x}^{2}}+\frac{1}{{{x}^{2}}}\] and \[{{x}^{2}}-\frac{1}{{{x}^{2}}}\]respectively, are____.

A. \[14,8\sqrt{3}\]              
B. \[-14,-8\sqrt{3}\]
C. \[14,-8\sqrt{3}\] 
D.         \[-14,\,8\sqrt{3}\]
Answer» D.         \[-14,\,8\sqrt{3}\]


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