\[- 2\ \ и\ \ 1\]
\[x_{1} + x_{2} = - 2 + 1 = - 1;\]
\[x_{1} \cdot x_{2} = - 2 \cdot 1 = - 2.\]
\[Уравнение:\]
\[x^{2} + x - 2 = 0.\]