If 3 terms, and leading coefficient is 1: Watch the signs !!!!
1x2 + bx + c = (1x + _)(1x + _) factors of c that add up to b
1x2 - bx + c = (1x - _)(1x - _) factors of c that add up to b
1x2 + bx - c = (1x + _)(1x - _) factors of c whose difference is b
If 3 terms, and leading coefficient is not 1:
ax2 + bx + c = (__x + __)(__x +__)
Check the Outside, Inside of
FOIL to get b
Watch the signs!!! See above.
If 4 terms – Factor by Grouping.
Using ( )’s group the firsttwo terms and the last two terms.
Factor out the GCF from each grouping .
You now have 2 terms added together and they should have a GCF.
Factor out the GCF from these two terms.
Answer form (__ +/- __ )(__ +/- __)
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