## Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole

# Appendix A - A.4 - Quadratic Equations - Exercises - Page 550: 17

#### Answer

$4x^2-16 = (4)~(x+2)~(x-2)$

#### Work Step by Step

The general form of factoring the difference of two squares is as follows: $x^2-y^2 = (x+y)~(x-y)$ We can factor the expression by using the GCF and then factoring the difference of two squares: $4x^2-16 = (4)(x^2-4)$ $4x^2-16 = (4)~(x+2)~(x-2)$

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