Answer
$-15x^{2}+6$
Work Step by Step
$-7(2x^{2}-1)-x^{2}-1$
Distribute the $-7$:
$-7(2x^{2})-7(-1)-x^{2}-1$
$-14x^{2}+7-x^{2}-1$
Combine like terms:
$-15x^{2}+6$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 1 - Review - Page 44: 82
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