Insert math symbol

2²

http://apple.stackexchange.com/questions/43845/how-do-i-type-a-%C2%B2-or-a-%C2%B 3-on-an-apple-keyboard-international-english-layout

The simplest solution is to, copy and paste:

²

save it somewhere so you can easily copy and paste it, when you need it.

Officially it is doable:

>System Preferences>Keyboard>>Keyboard ( √ show keyboard, Emoji, & Symbols Viewers in menu bar)

Now from the icon in the upper right menu bar top of your screen>Show Emoji & Symbols

from this "Character View" Go the gear wheel at the upper left corner, select customize, and check the box for Digits.

Your super scripts, fractions etc are built in here.

With the the Character View>Digits-all showing you double click to insert for example in your email.

Simple huh?

I know this post is kinda old, but this was exactly what I've been searching for! thnx so much for figuring that out.