Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 9 - Quadratic Functions and Equations - 9-4 Factoring to Solve Quadratic Equations - Practice and Problem-Solving Exercises - Page 571: 31


$k=-2$ or $k=-5$

Work Step by Step

$k^2+7k+10=0$ $k^2+2k+5k+10$ $(k+2)(k+5)=0$ $k+2$ or $k+5=0$ $k=-2$ or $k=-5$
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