1.

If\[\frac{\sqrt{\sqrt{\sqrt{{{\sqrt{\mathbf{5+2}}}^{\mathbf{x}}}}}}}{{{\mathbf{2}}^{\mathbf{x}}}\mathbf{-1}}\mathbf{=}\frac{\mathbf{1}}{{{\mathbf{3}}^{\mathbf{7/8}}}}\], then find the value of x.

A. 4
B. 1
C. 2
D. 3
Answer» D. 3


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