#### Answer

$x=\pm2$

#### Work Step by Step

First, we add 4 to both sides to isolate $x^2$, giving us $x^2=4$. Take the square root of both sides to get $x=\pm2$

Published by
Prentice Hall

ISBN 10:
0133186024

ISBN 13:
978-0-13318-602-4

$x=\pm2$

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