TeX source:
\begin{array}{crclcl} & u^2-16u &=& 0 \cr & u\left(u-16 \right) &=& 0 \cr \text{Faktor 1: } & u_1 &=& 0 \cr\cr \text{Faktor 2: } & u -16 &=& 0 \cr & u_2 &=& 16\end{array}