\[\left\{ \begin{matrix} x^{2} - 3y^{2} = 22 \\ x^{2} + 3y^{2} = 28 \\ \end{matrix} \right.\ \ ( + )\]
\[2x^{2} = 50\]
\[x^{2} = 25\]
\[x = \pm 5.\]
\[y_{1,2}^{2} = \frac{28 - 25}{3} = 1.\]
\[y = \pm 1.\]
\[Ответ:(5;1);(5; - 1);( - 5;1);\]
\[( - 5; - 1).\]