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If $(2x + \frac{1}{2x}) = 5$, then what is the value of $(8x^3 + \frac{1}{8x^3})$ ? |
110 120 100 125 |
110 |
If x + \(\frac{1}{x}\) = n then, $x^3 +\frac{1}{x^3}$ = n3 - 3 × n If $(2x + \frac{1}{2x}) = 5$ then, $(8x^3 + \frac{1}{8x^3})$ = 53 - 3 × 5 = 110 |
