TeX Quellcode:

\begin{array}{rclcll}0 &=& 3-\sqrt{x^3+3} &\vert& +\sqrt{x^3+3} \\\sqrt{x^3+3} &=& 3 &\vert& ()^2 \\x^3+3 &=& 9 &\vert& -3 \\x^3 &=& 6 &\vert& \sqrt[3]{} \\x &=& \sqrt[3]{6}\;\in\;\mathbb{D}\end{array}