TeX Quellcode:

\begin{array}{rclll} x^2-2x-15 &\neq & 0 &\vert &\text{p-q-Formel}\\x_{1,2} &\neq & 1\pm\sqrt{1^2+15}\\x_{1,2} &\neq & 1\pm\sqrt{16}\\\\x_1 &\neq & 1+4 = 5\\x_2 &\neq & 1-4 = -3\end{array}