Answer
$m = 9, -9$
Work Step by Step
$m^2=81$
$\sqrt {m^2} = \pm\sqrt {81}$
$m = 9, -9$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 9 - Quadratic Functions and Equations - Mid-Chapter Quiz - Page 560: 13
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