Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Appendix A - A Exercises - Page A6: 3


The student didn't factor.

Work Step by Step

Here, you cannot distribute the exponent into the values inside the parenthesis. Rather, you must find $(x+3)(x+3)$. After all: $$ (a+b)^2 \ne a^2 + b ^ 2 $$
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