A) \[\left( a-\frac{1}{a} \right)\left( {{a}^{2}}+\frac{1}{{{a}^{2}}}-1 \right)\]
B) \[\left( a+\frac{1}{a} \right)\left( {{a}^{2}}+\frac{1}{{{a}^{2}}}-1 \right)\]
C) \[\left( a+\frac{1}{a} \right)\left( {{a}^{2}}-\frac{1}{{{a}^{2}}}+1 \right)\]
D) \[\left( a-\frac{1}{a} \right)\left( {{a}^{2}}+\frac{1}{{{a}^{2}}}+1 \right)\]
E) None of these
Correct Answer: A
Solution :
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