Subtract: x2x2−1−xx−1\frac{x^2}{x^2-1} - \frac{x}{x-1}x2−1x2−x−1x
x2−xx2−1\frac{x^2-x}{x^2-1}x2−1x2−x
1x+1\frac{1}{x+1}x+11
xx+1\frac{x}{x+1}x+1x
−xx+1\frac{-x}{x+1}x+1−x