1.

If \(2\left[ {{x^2} + \frac{1}{{{x^2}}}} \right] - 2\left[ {x - \frac{1}{x}} \right] - 8\; = \;0,\;\) then what are the two values of \(x - \frac{1}{x}?\)

A. -1 or 2
B. 1 or -2
C. -1 or -2
D. 1 or 2
Answer» B. 1 or -2


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