TeX Quellcode:

\begin{array}{crclcl} & \mathbb{D} &=& \mathbb{R} \cr \cr & x^3-5x^2-6x &=& 0 \cr & x\left(x^2-5x-6\right) &=& 0 & \vert & \text{Satz vom Nullprodukt} \cr \text{Faktor 1:} & x_1 &=& 0 \cr\cr \text{Faktor 2:} & x^2-5x-6 &=& 0 &\vert& \text{p-q-Formel} \cr & x_{2,3} &=& \dfrac{5}{2} \pm \sqrt{ \left(- \dfrac{5}{2} \right)^2+6} \cr\cr & &=& \dfrac{5}{2} \pm \sqrt{\dfrac{49}{4}} \cr \cr & x_2 &=& \dfrac{5}{2}+ \dfrac{7}{2} = 6 \cr\cr & x_3 &=& \dfrac{5}{2}- \dfrac{7}{2} = -1 \cr \cr & \mathbb{L} &=& \{-1;0;6\} \end{array}