\left\{ \begin{array} { l } { x ^ { 2 } - 2 + y = 0 } \\ { y + 5 x = 30 } \end{array} \right.
I-solve ang x, y (complex solution)
x=\frac{5+\sqrt{87}i}{2}\approx 2.5+4.663689527i\text{, }y=\frac{-5\sqrt{87}i+35}{2}\approx 17.5-23.318447633i
x=\frac{-\sqrt{87}i+5}{2}\approx 2.5-4.663689527i\text{, }y=\frac{35+5\sqrt{87}i}{2}\approx 17.5+23.318447633i
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