Tìm x và y

$\left\{\begin{array}{l}(\mathrm{x}+\sqrt{{\mathrm{x}}^2+2\mathrm{x}+2}+1)(\mathrm{y}+\sqrt{{\mathrm{y}}^2+1})=1\\ {\mathrm{x}}^2-3\mathrm{xy}-{\mathrm{y}}^2=3\\ \end{array}\right.$

Giúp Y~Y