Answer
$(x+1)(x+3)$
Work Step by Step
Using the factors of $3$, we have $1$ and $3$ ($1+3=-4$ and $(1)(3)=3$):
$$
x^2+4x+3=(x+1)(x+3)
.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 10 - Test - Page 358: 7
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