Answer
$2y^2-10$
Work Step by Step
$(-y^2-4)+(3y^2-6)=-y^2-4+3y^2-6=2y^2-10$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 5 - Review - Page 407: 130
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