1. [tex]x^2 + 5x + 4 = (x+1)(x+4)[/tex]
2. [tex]2x^2 -3x - 2 = 2x^2 -4x + x - 2 = 2x(x - 2) + 1(x-2) = (x-2)(2x+1)[/tex]
3. [tex]\frac{x^2-3x+2}{x^2 -x - 6} = \frac{(x-1)(x-2)}{(x+2)(x-3)} \text{ - Nu poate fi redusa}[/tex]
