If $$\left( {a + \frac{1}{a}} \right) = 6,$$then $$\left( {{a^4} + \fr – McqOptions

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1.	If $$\left( {a + \frac{1}{a}} \right) = 6,$$then $$\left( {{a^4} + \frac{1}{{{a^4}}}} \right)$$= ?
A.	154
B.	158
C.	160
D.	164
Answer» B. 158

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