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If $ X^2 +\frac{1}{x^2} = 38 $ , then what is the value of $ X - \frac{1}{x}$ ? |
6 7 8 10 |
6 |
$ X^2 +\frac{1}{x^2} = 38 $ what is the value of $ X - \frac{1}{x}$ a2 + b2 = n a + b = \(\sqrt {n - 2}\) $ X - \frac{1}{x}$ = \(\sqrt {38 - 2}\) = 6 |
