Explanation Given: The expression 5 x 3 − 20 x Formula Used: Difference of squares: a 2 − b 2 = ( a − b ) ( a + b ) Calculation: First of all, we pull out the GCF to rewrite the given expression again: 5 x 3 − 20 x = 5 x ( x 2 − 4 ) ( On pulling out 5 x ) = 5 x ( x 2 − 2 2 ) ( On rewriting 4 as 2 2 ) = 5 x ( x − 2 ) ( x + 2 ) ( On applying difference of squares) ∴ 5 x 3 − 20

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ISBN: 9780136554585

Author: Blitzer

Publisher: VST

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Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.

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Chapter 6.5, Problem 17ES

To determine

Factorization for the given expression.

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Chapter 6 Solutions

EBK INTRODUCTORY AND INTERMEDIATE ALGEB

Ch. 6.1 - Prob. 1CAVC Ch. 6.1 - Prob. 2CAVC Ch. 6.1 - Prob. 3CAVC Ch. 6.1 - Prob. 4CAVC Ch. 6.1 - Prob. 1ES Ch. 6.1 - Prob. 2ES Ch. 6.1 - Prob. 3ES Ch. 6.1 - Prob. 4ES Ch. 6.1 - Prob. 5ES Ch. 6.1 - Prob. 6ES

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