1.

If \[\mathbf{3x}+\frac{1}{\mathbf{3x}}=\mathbf{3}\], then the value of \[27{{x}^{3}}+\frac{1}{27{{x}^{3}}}\] is

A.  -52                  
B.  52             
C.  18         
D.  -18
Answer» D.  -18


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