TeX source:
\begin{array}{crclcl} & -10 &=& -4\left\vert(6x+5)(-26x-13)\right\vert-10 &\vert& +10 \cr & 0 &=& -4\left\vert(6x+5)(-26x-13)\right\vert &\vert& :(-4)\cr& 0 &=& \left\vert(6x+5)(-26x-13)\right\vert \cr& 0 &=& (6x+5)(-26x-13) &\vert& \text{Satz vom Nullprodukt}\cr\text{Faktor 1:} & 6x+5 &=& 0 &\vert& -5 \cr& 6x &=& -5 &\vert& :6 \cr& x_2 &=& -\dfrac{5}{6} \cr\cr\text{Faktor 2:} & -26x -13 &=& 0 &\vert& +13 \cr& -26x &=& 13 &\vert& :(-26) \cr& x_3 &=& -\dfrac{1}{2}\end{array}