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Let's try another one:
| Factor
|
 |
I'll give you a big start:
What do you think?
The
12 is positive...
and we need a
+7...
Will this work?
No! It gives a last
term of -12.
Will this work?
No! Same reason.
What about this?
The last term IS a
positive 12...
But, the outer and
inner terms give
-7... So, no!
How about this? (It's our last
chance!)
Check it with
FOIL... It works!
Continued on the
next
page
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