Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 4 - Quadratic Functions and Equations - 4-4 Factoring Quadratic Expressions - Practice and Problem-Solving Exercises: 56

Answer

$(x+2)(x-2)$

Work Step by Step

We can use the rule $(a+b)(a-b)=a^2-b^2$ because both terms, $x^2$ and 4 are perfect squares. $x^2-2^2=(x+2)(x-2)$
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