Algebra Honors

CHAPTER 8-3: MULTIPLYING POLYNOMIALS

MULTIPLICATION OF A BINOMIAL BY A TRINOMIAL

OR TWO TRINOMIALS

When you multiply a trinomial by a binomial or two trinomials,

 it gets really tricky!

2 ways:
1) box method
2) column method
(double or triple distributive with columns to combine like terms)
I’LL SHOW YOU THESE METHODS IN CLASS

If you have a trinomial times a binomial, it's easier to use the Commutative Property
and make it a binomial times a trinomial:
(x² + x - 1) (x - 1)
switch it to
(x - 1) (x² + x - 1)