Answer
8$x^{2}$ + 2b - 22
Work Step by Step
(3$x^{2}$ - 4b+ 28) + (9$x^{2}$ - 30) - (4$x^{2}$ - 6b + 20)
= 3$x^{2}$ - 4b+ 28 + 9$x^{2}$ - 30 - 4$x^{2}$ + 6b - 20
= 8$x^{2}$ + 2b - 22
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Review - Page 330: 47
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