8.3 Multiplying
Polynomials
The Distributive Property
3𝑚 + 4 𝑚 + 5
5𝑦 − 2 𝑦 + 8
FOIL Method
𝑥 + 3 𝑥 − 4
4𝑏 − 5 3𝑏 + 2
More Distributive
3𝑥 − 5 2𝑥2
+ 7𝑥 − 8
𝑚2
+ 2𝑚 − 3 4𝑚2
− 7𝑚 + 5
8.4 Special Products
Square of a Sum
𝑥 + 7 2
3𝑥 + 4𝑦 2
Square of a Difference
𝑎 − 2 2
2𝑥 − 5𝑦 2
Product of a Sum and a Difference
(the difference of squares)
3𝑛 + 2 3𝑛 − 2
4𝑐 − 7𝑑 4𝑐 + 7𝑑
Homework
page 483 #13-31 odds
page 489 #22-44 evens

8.3 8.4 multiply polynomials