|
OK, here's the trick:
| We'll
take the square root: |
 |
Squares and
square roots undo each other... Right?
Yep!
So,
Now, remember our
equation rules -- whatever we do to one side, we have to do to the
other. So, we'll take the square root of both sides:
Uh oh... We only got one
answer. Hmm... We got two answers when we factored.
Here's what you
officially do to fix this problem:
Continued on the
next
page
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