College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.6 - Factoring - P.6 Exercises - Page 42: 7

Answer

$5(a-4)$

Work Step by Step

The only factor $5a$ and $-20$ have in common is $5$. Factoring it yields $5a-20=5(a-4)$.
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