TeX Quellcode:
\begin{array}{rclcl} x^2+3x+\dfrac{7}{2} &=& 0 &\vert& \text{p-q-Formel} \cr\cr x_{1,2} &=& -\dfrac{3}{2}\pm \sqrt{\dfrac{9}{4}-\dfrac{7}{2}} \cr\cr x_{1,2} &=& -\dfrac{3}{2} \pm \sqrt{-\dfrac{5}{4}} \cr\cr \end{array}