Notes #7
8-3: Multiplying Binomials
A. Multiplying two binomials
One way to organize multiplying two
Another way to multiply polynomials is to use
binomials is to use FOIL, which stands for:
boxes. Multiply each monomial together and
o F
put their product in their shared box. Combine
o O
like terms and write your answer as a
o I
polynomial in descending order.
o L
Ex: (4x – 1)(x + 3)
Ex: (4x – 1)(x + 3)
Simplify.
1.) (2x 3)(x 4)
2.) (5
m
2)(8
m
1)
3.) (9a 8)(7a 4)
4.) (6
h
7)(6
h
7)
5.) (3x 4)(2x 5)
6.) (3
x
4)(3
x
4)
B. Multiplying a trinomial and a binomial
Simplify the product.
x 6)(2x 3)
8.) (6n 8)(2n
n 7)
2
2
7.) (4x