TeX Quellcode:

\begin{array}{rclcl} 2x^2-4x+2 &=& \dfrac{1}{2}x+1 & \vert & -\dfrac{1}{2}x -1 \cr 2x^2-\dfrac{9}{2}x+1 &=& 0 & \vert & :2 \cr x^2-\dfrac{9}{4}x+\dfrac{1}{2} &=& 0 &\vert& \text{p-q-Formel} \cr x_{1,2} &=& \dfrac{9}{8} \pm \sqrt{\left(-\dfrac{9}{8}\right)^2-\dfrac{32}{64}} \cr x_{1,2} &=& \dfrac{9}{8} \pm \sqrt{\dfrac{49}{64}} \cr \cr x_1 &=& \dfrac{9}{8}+\dfrac{7}{8} = 2 \cr x_2 &=& \dfrac{9}{8}-\dfrac{7}{8} = \dfrac{1}{4} \end{array}