\[\left\{ \begin{matrix} y = x^{2} + 2x \\ y - x = 2\ \ \ \ \ \\ \end{matrix} \right.\ \]
\[\left\{ \begin{matrix} y = x^{2} + 2x \\ y = x + 2\ \ \ \ \ \\ \end{matrix} \right.\ \]
\[x = - 2;\ \ x = 1.\]
\[Ответ:( - 2;0);\ \ (1;3).\]