[WashingtonDC]

I am trying to write out formulas in Word 2007.

I need to use large square brackets around the entire equation, as well as
subscript and superscript inside the large square brackets.

I have figured out that to get the large square brackets, I need to use the
equation tool. However, once I have inserted the large square bracket I am
unable to convert any letters/numbers to super or subscript.

Also, once i have text written in a document, I am unable to access the
Equation tab under Insert. I need to open a new document to access equation
and could then copy and save under the text in the written portion. Is there
a better way to do this?

Thank you in advance.