$$\left. \begin{array} { l } { - 1 / 12 } \\ { x 3 x ^ { 2 } + 5 x - 2 = 0 } \\ { - 3 , - \right.$$
$\left\{\begin{matrix}x=-\frac{\sqrt{8x_{3}+25}+5}{2x_{3}}\text{, }y=-\frac{1}{12}\approx -0.083333333\text{, }z=-3\text{; }x=\frac{\sqrt{8x_{3}+25}-5}{2x_{3}}\text{, }y=-\frac{1}{12}\approx -0.083333333\text{, }z=-3\text{, }&x_{3}\neq 0\text{ and }x_{3}\geq -\frac{25}{8}\\x=\frac{2}{5}=0.4\text{, }y=-\frac{1}{12}\approx -0.083333333\text{, }z=-3\text{, }&x_{3}=0\end{matrix}\right.$
