User:FeatherPurple/sandbox

Style used on Horner's method:

3 │  2    −6     2    −1    │         6     0     6    └────────────────────────        2     0     2     5

Style used on Synthetic division:

$$\begin{array}{cc} \begin{array}{c} 3 \\ \\ \\ \end{array} &   \begin{array}{|rrrr} 2 & -6 &   2 &  -1 \\          &   6 &   0 &   6 \\        \hline 2 &  0 &   2 &   5     \end{array} \end{array}$$