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 Click on the appropriate oval to pick an
answer, then click Continue.
For which of the following values of m is the above expression positive?
 1
0
-1
-3
 -5
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There are several ways to solve this problem, but
the quickest is to use reverse FOIL to see that:
Now we can substitute values for m into a
relatively simple expression. Let's start with the first choice since it's an easy number to substitute.
Remember, zero is neither positive nor negative, so a result of zero doesn't give us a positive number. Try the next choice.
Not that one, either. What about the next one?
Nope. The fourth choice?
It must be the last choice.
That’s positive, so -5 is our answer.
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