Cool math Algebra Help Lessons: Polynomials - Multiplying with FOIL (Multiplication)

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Coolmath Algebra
Polynomials lesson 6 - Multiplying with FOIL (page 2 of 3) page 1
---- This algebra lesson explains how to multiply polynomials (binomials) using FOIL.

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Here's another one:

( 3x - 4 )( 2x + 1 ) = 6x^2...

( 3x - 4 )( 2x + 1 ) = 6x^2 + 3x...

( 3x - 4 )( 2x + 1 ) = 6x^2 + 3x - 8x...

( 3x - 4 )( 2x + 1 ) = 6x^2 + 3x - 8x - 4 = 6x^2 - 5x -4

TRY IT:

Multiply

Here's a messier one:

( 2a - 5b )( 7a + b ) = 14a^2 + 2ab - 35ab - 5b^2 = 14a^2 - 33ab - 5b^2

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