#### Answer

$$\boxed {(3n+4)(n+1)}$$

#### Work Step by Step

$$3n^2+7n+4$$
$$3n^2+3n+4n+4$$
$$3n(n+1)+4(n+1)$$
$$\boxed {(3n+4)(n+1)}$$

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Published by
McDougal Littell

ISBN 10:
0618595414

ISBN 13:
978-0-61859-541-9

$$\boxed {(3n+4)(n+1)}$$

$$3n^2+7n+4$$
$$3n^2+3n+4n+4$$
$$3n(n+1)+4(n+1)$$
$$\boxed {(3n+4)(n+1)}$$

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