#### Answer

$x=-9,9$

#### Work Step by Step

$x^2-9=0$
factor...
$(x+9)(x-9)=0$
$x+9=0$
$x=-9$
$x-9=0$
$x=9$

Published by
Pearson

ISBN 10:
0-13446-914-3

ISBN 13:
978-0-13446-914-0

$x=-9,9$

$x^2-9=0$
factor...
$(x+9)(x-9)=0$
$x+9=0$
$x=-9$
$x-9=0$
$x=9$

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