\[x = - 2\ \ и\ \ x = 0,5:\]
\[(x + 2)\left( x - \frac{1}{2} \right) = 0\]
\[x^{2} - \frac{1}{2}x + 2x - 1 = 0\]
\[x^{2} + 1,5x - 1 = 0\]