TeX Quellcode:

\begin{array}{rclcl}y_1 = x^2 &=& \dfrac{3+\sqrt{7}}{2} &\vert& \pm\sqrt{} \cr x_{5,6} &=& \pm\sqrt{\dfrac{3+\sqrt{7}}{2}} \approx \pm1{,}68 \cr\cr y_2 = x^2 &=& \dfrac{3-\sqrt{7}}{2} &\vert& \pm\sqrt{} \cr x_{7,8} &=& \pm\sqrt{\dfrac{3-\sqrt{7}}{2}} \approx \pm0{,}42 \end{array}