\[x^{2} + 3x + 2 = 0\]
\[D = 3^{2} - 4 \cdot 1 \cdot 2 = 9 - 8 = 1\]
\[x_{1} = \frac{- 3 + \sqrt{1}}{2} = \frac{- 3 + 1}{2} = \frac{- 2}{2} =\]
\[= - 1\]
\[x_{2} = \frac{- 3 - \sqrt{1}}{2} = \frac{- 3 - 1}{2} = \frac{- 4}{2} =\]
\[= - 2\]
\[Ответ:\ x = - 1;\ x = - 2.\]