Elementary Algebra

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

Chapter 6 - Factoring, Solving Equations, and Problem Solving - Chapter 6 Review Problem Set - Page 273: 2



Work Step by Step

The greatest common factor of 3 and 21 is $3$. The greatest common factor of $x^2$ and $x$ is $x$. Thus, the greatest common factor of the given binomial is $3x$. Factor out $3x$ to obtain: $=3x(x+7)$
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