TeX Quellcode:

\begin{array}{rclll} 0 &=& \dfrac{1}{10}(x-7)^2 &\vert & \cdot 10 \cr 0 &=& (x-7)^2 &\vert& \sqrt{} \cr 0 &=& x-7 &\vert & +7 \cr 7 &=& x & & \rightarrow \quad P_2(7 \mid 0) \end{array}