Quadratic Simultaneous Equations by Boxed Rockets

\begin{matrix} y = 2 x^{2} + 12 x + 10 \\ y = x - 4 \end{matrix}

\begin{matrix} x = -2 or -3.5 \\ y = -6 or -7.5 \end{matrix}

\begin{matrix} y = x^{2} - 14 x - 4 \\ y = 2 x + 10 \end{matrix}

\begin{matrix} x = 16.8 or -0.832 \\ y = 43.6 or 8.336 \end{matrix}

\begin{matrix} y = 3 x^{2} - 15 x + 6 \\ y = 2 x - 2 \end{matrix}

\begin{matrix} x = 5.15 or 0.518 \\ y = 8.3 or -0.964 \end{matrix}

\begin{matrix} y = 2 x^{2} - 8 x - 3 \\ y = x - 4 \end{matrix}

\begin{matrix} x = 4.39 or 0.114 \\ y = 0.39 or -3.886 \end{matrix}

\begin{matrix} y = 3 x^{2} + 15 x - 9 \\ y = 3 x + 4 \end{matrix}

\begin{matrix} x = 0.887 or -4.89 \\ y = 6.661 or -10.67 \end{matrix}

\begin{matrix} y = 3 x^{2} + 5 x + 3 \\ y = 2 x + 5 \end{matrix}

\begin{matrix} x = 0.457 or -1.46 \\ y = 5.914 or 2.08 \end{matrix}