Even today, it's hard to beat (La)TeX's math notation. For comparison purposes, Nathan's Word 2007 example can be typeset using the code

```
$ (a+b)^n=\sum_{k=0}^n {n \choose k} a^k b^{n-k} $
```

to produce the output

From this example, the only noticable difference is that Word uses `()`

both to typeset parentheses and to enclose blocks for typesetting, whereas (La)TeX reserves `{}`

for enclosing blocks (and uses `\{`

and `\}`

to typeset curly braces).

The killer feature of (La)TeX, though, is the fact that you can write your own macros, and therefore define your own shortcuts, for mathematical (and nonmathematical) content. As far as I know, Word 2007's equation editor does not have this capability.

The fastest (La)TeX shortcuts for you will depend on your usage patterns; some of the more standardized ones that I use are the `\ce{}`

macro (provided by the mhchem package) for typesetting chemical formulae and the `\SI{value}{unit}`

(provided by the siunitx package) for typesetting units and values, but they probably would not be very useful for people who rarely use chemical formulae or physical units in their documents.