Elementary Algebra

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

Chapter 6 - Factoring, Solving Equations, and Problem Solving - 6.5 - Factoring, Solving Equations, and Problem Solving - Problem Set 6.5: 20

Answer

$(a-3)(a+10)$

Work Step by Step

We will use the rules of factoring trinomials to completely factor the polynomial: $a^{2}+7a-30$ =$a^{2}-3a+10a-30$ =$a(a-3)+10(a-3)$ =$(a-3)(a+10)$
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