Answer
$-2x^2-6x$
Work Step by Step
By combining like terms, the given expression, $
5x^2-8x-7x^2+2x
,$ simplifies to
\begin{array}{l}\require{cancel}
(5x^2-7x^2)+(-8x+2x)
\\\\=
-2x^2-6x
.\end{array}
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 2 - Real Numbers - 2.4 - Exponents - Problem Set 2.4 - Page 75: 61
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