|
Now, look at the last term of our
trinomial: - 45
and our middle coefficient:
-4
All we need to do is figure out
what signs to put in this
to give BOTH the
-45 and the
-4...
It can't be
because this would give us a
POSITIVE 45.
For the same reason, it can't be
We need to use a
+ and a
- ...
and we need a
-4 ...
| So,
|
 |
Check it with FOIL!
Continued on the
next
page
|
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