TeX Quellcode:

\begin{array}{rclcl} 0 &=& -301z+128z^2-95z^2+217z-33z^2+84z \cr 0 &=& 128z^2-95z^2-33z^2-301z+217z+84z \cr 0 &=& z^2(128-95-33)+z(-301+217+84) \cr 0 &=& 0z^2+0z \cr 0 &=& 0 \cr \cr \mathbb{L} &=& \mathbb{R} \end{array}