Answer
4$x^{3}$ + 4$x^{2}$ + 16xy - 9x + 18
Work Step by Step
(9xy + 4$x^{2}$ + 18) + (7xy - 4$x^{3}$ - 9x)
= -4$x^{3}$ + 4$x^{2}$ + (9xy + 7xy) - 9x + 18
= 4$x^{3}$ + 4$x^{2}$ + 16xy - 9x + 18
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: 48
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