$\left\{ \begin{array}{l}
\left( {x + y} \right)\left( {52x - 2xy} \right) = 2{x^2} + 19{y^2} + 8x - 34y + 126\\
{x^2} + {y^2} + 4x - 4y - 1 = 0
\end{array} \right.$