TeX Quellcode:

\begin{array}{rclcl} 0 &=& \dfrac{17}{3}\cdot (x^2-4x-221) &\vert& :\dfrac{17}{3} \cr\cr 0 &=& x^2-4x-221 &\vert& \text{p-q-Formel} \cr x_{1,2} &=& 2 \pm \sqrt{\left(-2\right)^2+221} \cr x_{1,2} &=& 2 \pm \sqrt{225} \cr\cr x_1 &=& 2+15 = 17 \cr x_2 &=& 2-15 = -13 \end{array}