Answer
$-6x^2+2x-12$
Work Step by Step
By combining like terms, the given expression, $
(4x^2-x-7)-(10x^2-3x+5)
$, simplifies to
\begin{array}{l}\require{cancel}
4x^2-x-7-10x^2+3x-5
\\\\=
(4x^2-10x^2)+(-x+3x)+(-7-5)
\\\\=
-6x^2+2x-12
.\end{array}
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 - Mid-Chapter Review - Mixed Review - Page 263: 17
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