Simplify x2−4x−5x2−25\frac{x^2 - 4x - 5}{x^2 - 25}x2−25x2−4x−5.
x+1x+5\frac{x+1}{x+5}x+5x+1
x−1x−5\frac{x-1}{x-5}x−5x−1
x+5x−5\frac{x+5}{x-5}x−5x+5
x−5x+5\frac{x-5}{x+5}x+5x−5