compose polynomial in latex

Question

I would create such a similar thing:

enter image description here

I tried using polynom package but the operation I'm doing aren't the common operation because I'm working on galois field so I don't want the result that polynom package give me. How can I create that image ?

I mean... Would you give only the polynomials x^3 + x^2 + 1 and x+1, or the full computation, possibly with alignment characters? — T. Verron, Nov 27 '12 at 23:04
I would have the full computation with alignment characters... — Mazzy, Nov 27 '12 at 23:05
Then you could edit the question to make it clear. You understand that it does greatly change the nature and difficulty of the task. — T. Verron, Nov 27 '12 at 23:06

score 6 · Accepted Answer · edited Jun 10 '20 at 12:32

You could use an array in conjunction with the booktabs package:

enter image description here

Notes:

This example was more focused on the alignment issues and not the drawing issues, so there us probably much room for improvent related to the drawing portion.

Code:

\documentclass{article}
\usepackage{amsmath}
\usepackage{booktabs}
\newcommand*{\Ph}{\hphantom{{}+{}}}%
\begin{document}
$\begin{array}{r  l@{} l@{} l@{} l@{} l@{}}
                                    &x^4 &{}+ 1  \
\cmidrule{2-6}
\multicolumn{1}{r |}{x^3 + x^2 + 1} &x^4 &        &{}+ x^2 &{}+ x &{}+ 1 \
                                    &x^4 &{}+ x^3 &        &{}+ x & \
\cmidrule{2-5}
                                    &    &\Ph x^3 &{}+ x^2 &      &{}+1\
                                    &    &\Ph x^3 &{}+ x^2 &      &{}+1\
\cmidrule(l{10pt}){3-6}
\end{array}$
\end{document}

compose polynomial in latex

1 Answers1

Notes:

Code:

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