TeX Quellcode:

\begin{array}{rclcl} 0 &=& -\dfrac{3}{4}x^2+2 &\vert& -2 \cr\cr -2 &=& -\dfrac{3}{4}x^2 &\vert& : \left(-\dfrac{3}{4}\right) \cr\cr x^2 &=& \dfrac{8}{3} &\vert& \pm\sqrt{} \cr\cr x &=& \pm \sqrt{\dfrac{8}{3}} \end{array}