Answer
$(2x+1)(x+10)$
Work Step by Step
$21x=20x+x$
$2x^2+21x+10=2x^2+20x+x+10=2x(x)+2x(10)+(1)x+(1)10=2x(x+10)+1(x+10)=(2x+1)(x+10)$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Prerequisites - Review Exercises - Page 64: 87
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