#### Answer

(x + 4)(x + 3)

#### Work Step by Step

$x^{2} + 7x + 12$
To factor this, we need two factors of 12 such that their sum is 7.
Thus the factors are 4 and 3.
$x^{2} + 7x + 12$ = $x^{2} + 3x + 4x + 12$
=x(x + 3) + 4(x + 3) = (x + 4)(x + 3) .

Published by
Pearson

ISBN 10:
0321726391

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

(x + 4)(x + 3)

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