\[x^{2} + 5x - 7 = 0\]
\[\left\{ \begin{matrix} x_{1} + x_{2} = - 5 \\ x_{1} \cdot x_{2} = - 7\ \ \\ \end{matrix} \right.\ \]
\[x_{1} + 1 + x_{2} + 1 =\]
\[= \left( x_{1} + x_{2} \right) + 2 = - 5 + 2 =\]
\[= - 3 \Longrightarrow b = - 3.\]
\[\left( x_{1} + 1 \right)\left( x_{2} + 1 \right) =\]
\[= x_{1}x_{2} + x_{1} + x_{2} + 1 =\]
\[= - 7 - 5 + 1 = - 11 \Longrightarrow\]
\[\Longrightarrow c = - 11.\]
\[Уравнение:\]
\[x² + 3x - 11 = 0.\]