1.

On simplification the product\[\left( x-\frac{1}{x} \right)\]\[\left( x+\frac{1}{x} \right)\]\[\left( {{x}^{2}}+\frac{1}{{{x}^{2}}} \right)\]is

A. \[{{x}^{3}}-\frac{1}{{{x}^{3}}}\]
B. \[{{x}^{3}}+\frac{1}{{{x}^{3}}}\]
C. \[{{x}^{4}}-\frac{1}{{{x}^{4}}}\]
D. \[{{x}^{4}}+\frac{1}{{{x}^{4}}}\]
Answer» D. \[{{x}^{4}}+\frac{1}{{{x}^{4}}}\]


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