Can I draw this picture by using tabularray? - TeX

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Can I draw this picture by using tabularray?

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Laurenso

I have this picture
![image.png](/image?hash=bcb78fea68c105b50621108d3f4fe1532862f16df4e482cd5c36d2bf676d9325)

My code 
```
\documentclass[tikz,border=3.14mm]{standalone}
\begin{document}
	\begin{tikzpicture}[yscale=.5]
			\path[left]
		(0,0)     node{$6x^3-2x^2+\phantom{6}x+3$}
		++(-90:1) node{$6x^3-6x^2+6x\phantom{{}+3}$}
		++(-90:1) node{$12x^3 - 8x^2 + 7x+3$};
		\path[left,magenta]
		(0,-.5)  ++(180:.2) node{$+$\phantom{$6x^3-2x^2+\phantom{6}x+3$}}
		;
	\draw[blue] 
	(0,-1.5)--+(180:3.5);	
	\end{tikzpicture}
	\end{document}
```

I tried with `\usepackage{tabularray}`
```
\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[left=2.00cm, right=2.00cm, top=2.00cm, bottom=2.00cm]{geometry}
\usepackage{amssymb}
\usepackage{hyperref}
\usepackage{mathtools}
\usepackage{amsthm}
\usepackage{tabularray}
\usepackage{ninecolors}
\UseTblrLibrary{amsmath,
	booktabs,
	counter,
	diagbox,
	siunitx,
	varwidth}
\begin{document}
\begin{tblr}{
		colspec={rrrrrrr},
			cells={mode=dmath},
				hline{Y} = {solid}
	} 
	6x^3  & - & 2x^2&+&x&+&3  \\
	6x^3 & - & 6x^2& +&6x\\
	12x^3 & - & 8x^2& +&7x&+&3\\
\end{tblr}
\end{document}
```

![image.png](/image?hash=89df646531ea9e8f421d29cb721ccb4a54abce94a3584ccbf1ff30a4d947c148)

Can I draw this picture by using tabularray?

Top Answer

samcarter

One possible way to draw this is to add an additional column at the front for the `+` sign:

```
\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[left=2.00cm, right=2.00cm, top=2.00cm, bottom=2.00cm]{geometry}
\usepackage{amssymb}
\usepackage{hyperref}
\usepackage{mathtools}
\usepackage{amsthm}
\usepackage{tabularray}
\usepackage{ninecolors}
\UseTblrLibrary{amsmath,
	booktabs,
	counter,
	diagbox,
	siunitx,
	varwidth}
\begin{document}
\begin{tblr}{
		colspec={rrrrrrrr},
			cells={mode=dmath},
				hline{Y} = {solid,blue},
        colsep = 0.5mm
	} 
	\SetCell[r=2]{fg=magenta}+ &6x^3  & - & 2x^2&+&x&+&3  \\
	&6x^3 & - & 6x^2& +&6x\\
	&12x^3 & - & 8x^2& +&7x&+&3\\
\end{tblr}
\end{document}
```

![Screenshot 2023-06-18 at 16.15.11.png](/image?hash=a6c6739fcef8361094c262ee5b94a8e7201b410f0f5cef9fda24dc8fcbf70f67)

Answer #2

Skillmon

Just using `array`, `multirow`, and `colortbl` (through `[table]` for `xcolor`):

```
\documentclass[border=3.14]{standalone}

\usepackage[table]{xcolor}
\usepackage{array}
\usepackage{multirow}
\setlength\extrarowheight{1pt}

\begin{document}
$\begin{array}{*{4}{@{} >{{}}c<{{}} @{} r }}
  &  6x^3 & - & 2x^2 & + &  x & + & 3 \\
  \multirow{-2}{*}{$\!\mathcolor{magenta}{{}+{}}$}
  &  6x^3 & - & 6x^2 & + & 6x & \\
  \arrayrulecolor{blue}
  \hline
  & 12x^3 & - & 8x^2 & + & 5x & + & 3 \\
\end{array}$
\end{document}
```

![tabularthingy-1.png](/image?hash=b7dac4c671d4b9caea79273cdf5bb0d056e180b5c433bd5c10639ffc811109ae)

2 Answers