If $$x + \frac{1}{x} = 3\sqrt 2 ,$$ then what is the value of $${x^5} + \frac{1}{{{x^5}}}?$$
A. 178√3
B. 789√2
C. 1581√2
D. 717√2
Answer: Option D
This Question Belongs to Arithmetic Ability >> Algebra
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