TeX Quellcode:

\begin{array}{rclcl} 12x^2+18x-11 &=& 0 &\vert& :12 \\ x^2+\dfrac{3}{2}x-\dfrac{11}{12} &=& 0 &\vert& \text{p-q-Formel} \\ x_{1,2} &=& -\dfrac{3}{4} \pm \sqrt{\dfrac{9}{16}+\dfrac{11}{12}} \\ x_{1,2} &=& -\dfrac{3}{4} \pm \sqrt{\dfrac{71}{48}} \\\\ x_{1} &=& -\dfrac{3}{4} + \sqrt{\dfrac{71}{48}} \approx 0{,}47 \\ x_{2} &=& -\dfrac{3}{4} - \sqrt{\dfrac{71}{48}} \approx -1{,}97\end{array}