TeX Quellcode:

\begin{array}{rclcll}u^2-2u-2 &=& 0 &\vert& \text{p-q-Formel} \\u_{1,2} &=& 1\pm\sqrt{(-1)^2+2}\\&=& 1\pm\sqrt{3} \\ \\u_1 &=& 1+\sqrt{3} \approx 2{,}73 \\u_2 &=& 1-\sqrt{3} \approx -0{,}73\end{array}