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What if
x = -2? Be careful!
TRY
IT:
Write
out what
means:
Let x = 2 and
simplify:
Let x = -5 and
simplify:
Here's something a
little messier:
What does this thing
mean?
The
number hangs around in
front... and we can expand out those
exponents:
So, why do we have
exponents?
Look at this thing!
Continued on the
next
page
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