MCQ
$ x^2 + \frac{1}{x^2} - 2 = ……….$
- A$ (x + \frac{1}{x})(x - \frac{1}{x}) $
- ✓$ (x - \frac{1}{x})^2 $
- C$ (x - \frac{1}{x})^3 $
- D$ (x + \frac{1}{2})^2 $
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