Answer
$z=12$ or $z=\frac{-3}{2}$
Work Step by Step
$2z^2-21z-36=0$
$(z-12)(2z+3)=0$
$z-12=0$ or $2z+3=0$
$z=12$ or $z=\frac{-3}{2}$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
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: 17
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