TeX Quellcode:

\begin{array}{rclcl} -x\left(-x+2+\dfrac{2}{x}\right) &=& \dfrac{x}{14+2x} : \dfrac{x}{196-4x^2} \cr\cr x^2-2x-2 &=& \dfrac{x}{14+2x} \cdot \dfrac{(14+2x)(14-2x)}{x} \cr\cr x^2-2x-2 &=& 14-2x &\vert& +2x+2 \cr x^2 &=& 16 &\vert& \pm \sqrt{} \cr\cr x_{1,2} &=& \pm 4 \;\in\;\mathbb{D} \cr \cr \mathbb{L} &=& \{-4;4\} \end{array}