TeX Quellcode:

\begin{array}{rclll} 27z^2+72z+48 &\neq & 0 &\vert & :27\\\\z^2+\dfrac{8}{3}z+\dfrac{16}{9} &\neq & 0 &\vert & \text{ p-q-Formel}\\\\z_{1,2} &\neq & -\dfrac{4}{3}\pm\sqrt{\left(\dfrac{4}{3}\right)^2-\dfrac{16}{9}}\\\\z_{1,2} &\neq & -\dfrac{4}{3}\pm\sqrt{0}\\\\\\\end{array}