TeX Quellcode:

\begin{array}{rclcl}0 &=& \sqrt{104x^2+36}-\sqrt{225x^2+11} &\vert& +\sqrt{225x^2+11}\\ \sqrt{225x^2+11} &=& \sqrt{104x^2+36} &\vert& ()^2\\ 225x^2+11 &=& 104x^2+36 &\vert& -11 -104x^2\\ 121x^2 &=& 25 &\vert& :121\\\\ x^2 &=& \dfrac{25}{121} &\vert& \pm\sqrt{}\\\\ x_{1} &=& \dfrac{5}{11} \in \mathbb{D} \\x_{2} &=& -\dfrac{5}{11} \in \mathbb{D}\end{array}