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Do you remember FOIL?
Prove it by multiplying these:
OK, now we'll be undoing FOIL. I'm
going to merge you into this slowly. Factoring can be a bit of a
shock.
Remember that, when you do FOIL,
there are inner and outer terms... This will be the key to nailing
these things.
Let's try to factoring this guy:
I'm going to start you out...
First, we can do the x guys --
they're easy:
And I'm going to give you the last
guys:
Continued on the
next
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