TeX Quellcode:

\begin{array}{rclll}-18 &=& \left\vert \dfrac{7}{2}x^2-2 \right\vert \cdot 3-\dfrac{9}{2}x^2 &\vert& +\dfrac{9}{2}x^2 \cr -18+\dfrac{9}{2}x^2 &=& \left\vert \dfrac{7}{2}x^2-2 \right\vert \cdot 3 &\vert& : 3 \cr -6+\dfrac{3}{2}x^2 &=& \left\vert \dfrac{7}{2}x^2-2 \right\vert &\vert& ()^2 \cr \left(-6+\dfrac{3}{2}x^2\right)^2 &=& \left(\dfrac{7}{2}x^2-2 \right)^2 \cr\cr \dfrac{9}{4} x^4-18x^2+36 &=& \dfrac{49}{4}x^4-14x^2+4 &\vert& -\dfrac{9}{4} x^4+18x^2-36 \cr0 &=& 10x^4+4x^2-32 \cr0 &=& 10\left(x^2\right)^2+4x^2-32\end{array}