Multiplying Radicals

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Slide 1

Section 9.4 Multiplying Radical Expressions Copyright © 2013, 2010, 2006, 2003 Pearson Education, Inc.

Slide 2

For all positive numbers a and b, 3 3

Slide 3

Example Multiply. a. b.

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Example Multiply. a.

Slide 5

Example Multiply. Multiply the coefficients and the radicals. Look for perfect square factors. Simplify. Multiply.

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Example Multiply. Multiply the coefficients and the radicals. Look for perfect square factors. Simplify. Multiply.

Slide 7

Example Multiply and simplify. Distribute.

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Example Multiply and simplify. Distribute.

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Multiply. Example Use the FOIL method to obtain four products.

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Multiply. Example

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Multiply. (2x + 4)(2x  4) 4x2 4x2  16 Remember this? + 8x  8x  16 What happens? You lose your middle term. Perfect Squares Special FOIL

Slide 12

Example Multiply. The inner and outer terms cancel. FOIL. Example Special

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