Answer
$z=-3$ or $z=7$.
Work Step by Step
The given equation is
$\Rightarrow (z+3)(z-7)=0$
Use zero-product property rule.
$\Rightarrow z+3=0$ or $z-7=0$
Solve for $z$.
$\Rightarrow z=-3$ or $z=7$
Hence, the solutions are $z=-3$ or $z=7$.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 7 - Polynomial Equations and Factoring - Chapter Review - Page 411: 18
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