TeX Quellcode:

\begin{array}{rclll}a^2-5a+6 &=& 0 & \vert & \text{p-q-Formel}\\a_{1,2} &=& \dfrac{5}{2}\pm\sqrt{\left(-\dfrac{5}{2}\right)^2-6}\\a_{1,2} &=& \dfrac{5}{2}\pm\dfrac{1}{2}\\\\a_1 &=& \dfrac{5}{2}+\dfrac{1}{2} = 3\\a_2 &=& \dfrac{5}{2}-\dfrac{1}{2} = 2\end{array}