TeX Quellcode:
\begin{array}{rclll}0&=& -2 \log_{10}\left(x^4-\dfrac{8}{5} \right) &\vert & : (-2)\cr 0&=& \log_{10}\left(x^4-\dfrac{8}{5} \right) &\vert & 10^{*}\cr 1&=& x^4-\dfrac{8}{5} &\vert &+\dfrac{8}{5}\cr \dfrac{13}{5}&=& x^4 &\vert &\pm\sqrt[4]{}\cr\cr x_1 &=& \sqrt[4]{\dfrac{13}{5}}\approx 1{,}27\;\in\;\mathbb{D} & & \rightarrow \quad P_2 \left( \sqrt[4]{\dfrac{13}{5}} \mid 0 \right)\cr\cr x_2 &=& -\sqrt[4]{\dfrac{13}{5}}\approx -1{,}27\;\in\;\mathbb{D} & & \rightarrow \quad P_3 \left( -\sqrt[4]{\dfrac{13}{5}} \mid 0 \right)\end{array}