If x^{4} + \frac{1}{x^{4}} = 14, then value of x^{3} + \frac{1}{x^{3}} is A. 3\sqrt{6} B. {18}/{\sqrt{6}} C. 9\sqrt{\frac{2}{3}} D. 3\sqrt{2}

UPTET Paper 2 Math and Science 2019 Solved Paper

Question : 105 of 120

Marks: +1, -0

x^{4} + \;{1}/{x^{4}} = 14

, then value of

x^{3} + \;{1}/{x^{3}}

is
A.

3{√{6}}

\;{18}/{{√{6}}}

9√{\;{2}/{3}}

3{√{2}}

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