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8.7 Multiplying Polynomials What you’ll learn: 1.To multiply two binomials 2.To multiply two polynomials.

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Presentation on theme: "8.7 Multiplying Polynomials What you’ll learn: 1.To multiply two binomials 2.To multiply two polynomials."— Presentation transcript:

1 8.7 Multiplying Polynomials What you’ll learn: 1.To multiply two binomials 2.To multiply two polynomials

2 Multiplying Binomials – three methods 1.FOIL Method (x-7)(x+4) First x  x Outer4  x Inner-7  x Last-7  4 x²+4x-7x-28 x²-3x-28 2. Box Method (x-7)(x+4) x²+4x-7x-28 x²-3x-28 3.Column method -7 x x 4 x²x²-7x -28 4x -284x x²x²-7x x² - 3x - 28

3 Find each product. 1.(x-5)(x+9) 2.(4x-3)(2x+1)

4 Multiplying a binomial by a trinomial or two trinomials Use box method or column method. (x²-4x-8)(x²+3x-6)

5 Homework p. 455 14-40 even

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