TeX Quellcode:

\begin{array}{rclcl} \sqrt{4x-17} \cdot \sqrt{17+4x} &=& \sqrt{16x^2-289} \cr \sqrt{(4x-17) \cdot (17+4x)} &=& \sqrt{16x^2-289} \cr \sqrt{16x^2-289} &=& \sqrt{16x^2-289} \cr 0 &=& 0 \cr\cr \mathbb{L} &=& \left[\dfrac{17}{4};\infty\right[ \end{array}