TeX Quellcode:

\begin{array}{rclcl} 0 &=& 11x^2+110x+286 &\vert& :11 \cr &=& x^2+10x+26 &\vert& \text{p-q-Formel} \cr x_{1,2} &=& -5 \pm \sqrt{5^2-26} \cr &=& -5 \pm \sqrt{25-26} \cr &=& -5 \pm \sqrt{-1} \end{array}