\[\left\{ \begin{matrix} x^{2} + y^{2} = 9 \\ y - x^{2} = 2\ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ }\left\{ \begin{matrix} x^{2} + y^{2} = 9 \\ y = x^{2} + 2\ \ \\ \end{matrix} \right.\ \]
\[Два\ решения.\]