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Lesson 7-7 Multiplying Polynomials
FOIL There are two methods that can be used to multiply polynomials
The first is called FOIL. FOIL Stands for: First Outer Inner Last
Example Use FOIL to solve Multiply the First Terms
Multiply the Outer Terms Multiply the Inner Terms Multiply the Last Terms Add the four products and combine Like Terms
Use FOIL to solve
Problems to Try Simplify by using the FOIL method. 1. 2.
The Distributive Property
The FOIL Method only works when you multiply two binomials The other method used in multiplying polynomials uses the Distributive Property The Distributive Property always works!
Example Use the Distributive Property to Solve
Split the first polynomial up and write each term multiplied by the second polynomial Distribute Multiply Combine Like Terms
Use the Distributive Property to Solve
FOIL would not work here!
Multiplying two trinomials
Problems to Try Simplify using the Distributive Property 1. 2. 3.
Word Problem Translate the equation Substitute your values Simplify
Problem to Try 1.
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