Solve $x^{2} - 4x - 5 > 0$.

Explanation

1. 01

   $x^{2} - 4x - 5 = (x + 1)(x - 5)$, with roots $-1$ and 5.

2. 02

   An upward parabola is positive outside its roots: $x < -1$ or $x > 5$.