TeX Quellcode:

\begin{array}{rclcll}3x + 7 &=& -x^2 + 10x + 1 &\vert & +x^2-10x-1 \cr x^2-7x+6 &=& 0 &\vert& \text{p-q-Formel} \cr x_{1,2} &=& \dfrac{7}{2} \pm \sqrt{\left(-\dfrac{7}{2}\right)^2- 6} \cr x_{1,2} &=& \dfrac{7}{2} \pm \sqrt{\dfrac{25}{4}} \cr\cr x_1 &=& \dfrac{7}{2} + \dfrac{5}{2} = 6 \cr x_2 &=& \dfrac{7}{2} - \dfrac{5}{2} = 1 \end{array}