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