Answer
$x^{2}+7x+12$
Work Step by Step
Using the FOIL method, $(x+3)(x+4)=(x)(x)+(x)(4)+(3)(x)+(3)(4)=x^{2}+4x+3x+12=x^{2}+7x+12$.
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 5 - Section 5.6 - Special Products - Exercise Set - Page 387: 1
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