Answer
$x^2+14x+49$
Work Step by Step
$(x+7)^2 = (x+7)(x+7)$
$=(x)(x) + 7(x) + (x)7 + 7(7)$
$=x^2 + 7x + 7x + 49$
$=x^2+14x+49$
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: 20
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