Answer
$7w^2 - 24w - 6$
Work Step by Step
We simplify by removing the parentheses and then add the like terms as follows:
$$
(20w^2 - 17w - 6) - (13w^2 + 7w)\\
=20w^2 - 17w - 6 - 13w^2 - 7w\\
=7w^2 - 24w - 6
.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 5 - Section 5.3 - Addition and Subtraction of Polynomials - Exercise - Page 221: 47
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