Add: 3x−1+2x+1\frac{3}{x-1} + \frac{2}{x+1}x−13+x+12
x+5x2−1\frac{x+5}{x^2-1}x2−1x+5
5x\frac{5}{x}x5
5x+1x2−1\frac{5x + 1}{x^2 - 1}x2−15x+1
5x+1(x−1)(x+1)\frac{5x+1}{(x-1)(x+1)}(x−1)(x+1)5x+1