Simplify 1−1x21−1x\frac{1 - \frac{1}{x^2}}{1 - \frac{1}{x}}1−x11−x21.
1x\frac{1}{x}x1
1+1x1 + \frac{1}{x}1+x1
1−1x1 - \frac{1}{x}1−x1
x−1x - 1x−1