Solve {l}{y=x^2-7|x|+6}{y=x-3/x+1}{y=|x-3/x+1|}

$$\left. \begin{array} { l } { y = x ^ { 2 } - 7 | x | + 6 } \\ { y = \frac { x - 3 } { x + 1 } } \\ { y = | \frac { x - 3 } { x + 1 } | } \end{array} \right.$$

Solve for x, y

$$x=\frac{\sqrt{3}\sqrt{4\sqrt{831}\sin(\frac{\arccos(\frac{4519\sqrt{277}}{76729})}{3})-4\sqrt{277}\cos(\frac{\arccos(\frac{4519\sqrt{277}}{76729})}{3})+139}+21}{6}\approx 6.085628951\text{, }y=\frac{\sqrt{831}\sin(\frac{\arccos(\frac{4519\sqrt{277}}{76729})}{3})-\sqrt{277}\cos(\frac{\arccos(\frac{4519\sqrt{277}}{76729})}{3})+16}{3}\approx 0.435477072$$

$$x=-\frac{\sqrt{12\sqrt[3]{18\sqrt{921}+305}+12\sqrt[3]{305-18\sqrt{921}}+249}}{6}-\frac{7}{2}\approx -6.328546233\text{, }y=\frac{\sqrt[3]{18\sqrt{921}+305}+\sqrt[3]{305-18\sqrt{921}}+2}{3}\approx 1.750673791$$