TeX source:
\begin{array}{lrclcl} & \mathbb{D} &=& \mathbb{R} \cr\cr & 0 &=& (v^2+2v-2) \cdot e^{-6v} &\vert& \text{Satz vom Nullprodukt} \cr \text{Faktor 1:} & 0 &=& e^{-6v} \cr\cr \text{Faktor 2:} & 0 &=& v^2+2v-2 &\vert& \text{p-q-Formel} \cr & v_{1,2} &=& -1 \pm \sqrt{1^2+2} \cr\cr & v_1 &=& -1+\sqrt{3} \approx 0{,}73 \cr & v_2 &=& -1-\sqrt{3} \approx -2{,}73 \end{array}