\left\{ \begin{array} { l } { y ^ { 2 } - x ^ { 2 } = 1 ^ { 2 } } \\ { y ^ { 2 } + 3 y = x ^ { 2 } + x } \end{array} \right.
Solve for y, x (complex solution)
x=\frac{-3\sqrt{7}i-1}{8}\approx -0.125-0.992156742i\text{, }y=\frac{-\sqrt{7}i-3}{8}\approx -0.375-0.330718914i
x=\frac{-1+3\sqrt{7}i}{8}\approx -0.125+0.992156742i\text{, }y=\frac{-3+\sqrt{7}i}{8}\approx -0.375+0.330718914i
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