Is there a way to put a plus minus sign in an answer?
1 Answer
Do you mean a minus-plus sign?
Explanation:
Since you already know how to write a plus-minus sign,
From what I can tell, you can't really write this symbol in the editor.
Classic MathJax has the functions \pm for the plus minus sign which works here as well
- without the hashtags
\pm2
- with the hashtags
#\pm2#
and \mp for the minus plus sign, which does not work in the editor
- without the hashtags
\mp2
- with the hashtags
#\mp2#
However, you can improvise a little by using the stackrel()() function, which allows you to stack symbols or characters (text) on top of each other.
For example, you can write
- without the hashtags
stackrel("---")(+)
- with the hashtags
#stackrel("---")(+)#
It's not perfect, but it does the job :D.
ADDENDUM
I found a better way of writing the minus plus sign
- without the hashtags
stackrel(_)(+)
- with the hashtags
#stackrel(_)(+)#
I personally think the first option looks better
#stackrel("---")(+)2" "color(green)(sqrt()) " "# versus#" "color(red)(cancel(color(black)(stackrel(_)(+)2)))#
ADDENDUM II
Here's another way of writing the minus plus sign--this one is brought to you by Ernest Z.
The plus-minus sign is Unicode character 2213, so you can write in MS Word first by using writing 2213 followed by ALT + X.
Simply copy/paste the sign to the editor. It will look like this
- without the hashtags
∓2
- with the hashtags
#∓2#
I think we may have found the best version
#stackrel("---")(+)2 " "# #" "color(green)(ul(color(black)(∓2))) " "color(green)(sqrt()#
ADDENDUM III
Here's yet another way of writing the minus-plus sign, this time brought to you by NickTheTurtle!
- without hashtags
bar("+")2
- with hashtags
#bar("+")2#
I think that this version gets the job done + it has the added bonus of being easier to add to the answer!
#stackrel("---")(+)2 " "# #" "∓2 " "# #" "bar("+")2#