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It's really easy to
just do these guys in your head.
Here's how it works:
Guys that start out on the top...

end up with " +
" signs in front of them:

Guys that start out on the bottom...

end up with " -
" signs in front of them:

Then you just have to
deal with the exponents. Easy!
Let's do this guy in
one shot:

Continued on the
next
page
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