Answer
c., $x^{2}+14x+49$
Work Step by Step
$(x+7)^{2}$
As shown on page 285, the square of a binomial is given by the following formula:
$(a+b)^{2}=a^{2}+2ab+b^{2}$
In this case, $a=x$ and $b=7$.
$(x+7)^{2}=x^{2}+2(x)(7)+7^{2}=x^{2}+14x+49$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Section 5.4 - Multiplying Polynomials - Vocabulary, Readiness & Video Check - Page 288: 2
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