\[x^{2} - 5x + 6 = 0\]
\[x_{1} + x_{2} = 5;\ \ \ \ x_{1} \cdot x_{2} = 6\]
\[x_{1} = 3;\ \ \ x_{2} = 2\]
\[Ответ:x = 2;\ \ x = 3.\]