1.

If \(\frac{{6x}}{{\left( {2{x^2}{\rm{\;}} + {\rm{\;}}5x - 2{\rm{\;}}} \right)}}{\rm{}} = {\rm{}}1,{\rm{\;}}x > 0\), then the value of \({x^3}{\rm{}} + {\rm{}}\frac{1}{{{x^3}}}\) is :

A. 5√17/16
B. 5√17/8
C. 3√17/4
D. 3√17/8
Answer» C. 3√17/4


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