Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 6 - Factoring, Solving Equations, and Problem Solving - 6.2 - Factoring the Difference of Two Squares - Problem Set 6.2: 83

Answer

The answer is below.

Work Step by Step

It is the correct solution, for if this in plugged into the original equation, it will get a true statement. However, the person does not need to consider $4=0$. Whenever factoring, any constant that is factored out can be ignored once it has been factored out of the equation.
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