Algebra 1

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


$q= 2,-2$

Work Step by Step

$5q^2-20=0$ $5q^2-20+20=0+20$ $5q^2=20$ $5q^2/5=20/5$ $q^2=4$ $\sqrt {q^2} = \sqrt 4$ $q=-2,2$
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