TeX Quellcode:

\begin{array}{rclcl} z_1 = x^2 &=& -\dfrac{5}{2}+i &\vert& \pm\sqrt{} \cr x_{1,2} &=& \pm\sqrt{-\dfrac{5}{2}+i} \cr\cr z_2 =x^2 &=& -\dfrac{5}{2}-i &\vert& \pm\sqrt{} \cr x_{3,4} &=& \pm\sqrt{-\dfrac{5}{2}-i} \cr \cr \mathbb{L} &=& \left\{ \sqrt{-\dfrac{5}{2}+i} \; ; \; -\sqrt{-\dfrac{5}{2}+i} \; ; \; \sqrt{-\dfrac{5}{2}-i} \; ; \; -\sqrt{-\dfrac{5}{2}-i} \right\}\end{array}