Answer
$3x(x+7)$
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:
$=3x(x+7)$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
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
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