Answer
True
Work Step by Step
We use the distributive property to find:
$$ -n(-n-m)=n(n+m) \\ n^2+mn=n^2+mn$$
Thus, the given statement is true.
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 1 - Introduction to Algebraic Expressions - 1.8 Exponential Notation and Order of Operations - 1.8 Exercise Set - Page 67: 126
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