Answer
$q= 2,-2$
Work Step by Step
$5q^2-20=0$
$5q^2-20+20=0+20$
$5q^2=20$
$5q^2/5=20/5$
$q^2=4$
$\sqrt {q^2} = \sqrt 4$
$q=-2,2$
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 - 9-3 Solving Quadratic Equations - Practice and Problem-Solving Exercises - Page 551: 27
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