#### Answer

$x = 0, -4$

#### Work Step by Step

$3x^2 = -12x $
$3x^2 + 12x = -12x + 12x$
$3x^2 +12x = 0$
$3x (x+4) = 0$
Therefore
$3x = 0$
$x= 0$
OR
$x+4 = 0$
$x=-4$

Published by
Pearson

ISBN 10:
0321726391

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

$x = 0, -4$

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