TeX Quellcode:

\begin{array}{rclll} 2z^2+10z+1 &=& 0 & \vert & :2\\z^2+5z+\dfrac{1}{2} &=& 0 &\vert & \text{p-q-Formel}\\z_{1,2} &=& -\dfrac{5}{2}\pm\sqrt{\left(\dfrac{5}{2}\right)^2-\dfrac{1}{2}}\\z_{1,2} &=& -\dfrac{5}{2}\pm\sqrt{\dfrac{23}{4}}\\\\z_1 &=& -\dfrac{5}{2}+\dfrac{\sqrt{23}}{2} \approx -0{,}10\\z_2 &=& -\dfrac{5}{2}-\dfrac{\sqrt{23}}{2} \approx -4{,}90\\\end{array}