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: 32

Answer

$n=-2$ or $n=-\frac{6}{5}$

Work Step by Step

$7n^2+16n+15=2n^2+3$ $5n^2+16n+12=0$ $5n^2+10n+6n+12=0$ $(n+2)(5n+6)=0$ $n+2=0$ or $5n+6=0$ $n=-2$ or $n=-\frac{6}{5}$
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