Answer
$7$
Work Step by Step
Subtract each term of the binomial to obtain:
$=x-x-(-7)
\\=x-x+7$
Combine like terms to obtain
$=(x-x)+7
\\=0+7
\\=7$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 4 - Polynomials - 4.2 Negative Exponents and Scientific Notations - 4.2 Exercise Set - Page 245: 120
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