1. ## test

$\begin{center}
\begin{tabular}
1 & 1 & - & 3 \\ \hline
2 & 4 & 6 & 9 \\ \hline
3 & 9 & 9 & 18 \\
4 & 16 & 12 & 30 \\
5 & 25 & 15 & 45 \\
6 & 36 & 18 & 63 \\
\hline
\end{tabular}
\end{center}$

2. I'm going to have to fail you.

3. Hello, william!

Is this what you wanted?

$\begin{array}{cccc}
1 & 1 & - & 3 \\ \hline
2 & 4 & 6 & 9 \\ \hline
3 & 9 & 9 & 18 \\
4 & 16 & 12 & 30 \\
5 & 25 & 15 & 45 \\
6 & 36 & 18 & 63 \\
\hline
\end{array}
$

4. Originally Posted by Soroban
Hello, william!

Is this what you wanted?
yes sir thank you. how would i eliminate the lines? if you don't mind can you copy and paste that code because it does not let me see it(page error occurs)

5. Originally Posted by william
yes sir thank you. how would i eliminate the lines? if you don't mind can you copy and paste that code because it does not let me see it(page error occurs)
Do the right click, select properties, and you'll see the text.

\begin{array}{cccc} 1 & 1 & - & 3 \\ \hline 2 & 4 & 6 & 9 \\ \hline 3 & 9 & 9 & 18 \\ 4 & 16 & 12 & 30 \\ 5 & 25 & 15 & 45 \ 6 & 36 & 18 & 63 \\ \hline \end{array}

Remove the \hline's

6. Originally Posted by Moo
Do the right click, select properties, and you'll see the text.

\begin{array}{cccc} 1 & 1 & - & 3 \\ \hline 2 & 4 & 6 & 9 \\ \hline 3 & 9 & 9 & 18 \\ 4 & 16 & 12 & 30 \\ 5 & 25 & 15 & 45 \ 6 & 36 & 18 & 63 \\ \hline \end{array}

Remove the \hline's
Thanks but why doesn't this work?

$

\begin{array}{cccc} 1 & 1 & - & 3 \\ 2 & 4 & 6 & 9 \\ 3 & 9 & 9 & 18 \\ 4 & 16 & 12 & 30 \\ 5 & 25 & 15 & 45 \ 6 & 36 & 18 & 63 \\ \end{array}$

7. \begin{array}{cccc} 1 & 1 & - & 3 \\ 2 & 4 & 6 & 9 \\ 3 & 9 & 9 & 18 \\ 4 & 16 & 12 & 30 \\ 5 & 25 & 15 & 45 \\ 6 & 36 & 18 & 63 \\ \end{array}

$\begin{array}{cccc} 1 & 1 & - & 3 \\ 2 & 4 & 6 & 9 \\ 3 & 9 & 9 & 18 \\ 4 & 16 & 12 & 30 \\ 5 & 25 & 15 & 45 \\ 6 & 36 & 18 & 63 \\ \end{array}$

You forgot the red \
\\ stands for "making a new line"

8. Originally Posted by Moo
\begin{array}{cccc} 1 & 1 & - & 3 \\ 2 & 4 & 6 & 9 \\ 3 & 9 & 9 & 18 \\ 4 & 16 & 12 & 30 \\ 5 & 25 & 15 & 45 \\ 6 & 36 & 18 & 63 \\ \end{array}

$\begin{array}{cccc} 1 & 1 & - & 3 \\ 2 & 4 & 6 & 9 \\ 3 & 9 & 9 & 18 \\ 4 & 16 & 12 & 30 \\ 5 & 25 & 15 & 45 \\ 6 & 36 & 18 & 63 \\ \end{array}$

You forgot the red \
\\ stands for "making a new line"
brilliant,thanks!

9. $\mbox{Three Vectors \vec x, \vec y, and \vec z.}$ satisfy x + y + z = 0.

10. $\mbox{Three Vectors} \vec x, \vec y, and \vec z.$ satisfy x + y + z = 0.

11. $\mbox{Three Vectors} \vec x , \vec y, and \vec z.$ satisfy x + y + z = 0.