#### Answer

$x=4$
or
$x=-4$

#### Work Step by Step

$x^2+4=0$ Factor
$(x+4)(x-4)=0$
$x=4$
or
$x=-4$

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

$x=4$
or
$x=-4$

$x^2+4=0$ Factor
$(x+4)(x-4)=0$
$x=4$
or
$x=-4$

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