Answer
0
Work Step by Step
To combine like terms, add the coefficients.
$5x^2+3x^2-8x^2=(5+3+(-8))x^2=0x^2=0$
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 5.2 - Simplifying Algebraic Expressions - Exercise - Page 218: 30
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