Answer
6y$^3$+y$^2$+7y-20
Work Step by Step
Distribute the negative sign to the parentheses and then combine like terms.
(6y$^3$+2y$^2$-y-11)-(y$^2$-8y+9)
6y$^3$+2y$^2$-y-11-y$^2$+8y-9
(6y$^3$)+(2y$^2$-y$^2$)+(-y+8y)+(-11-9)
6y$^3$+y$^2$+7y-20
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 5 - Section 5.1 - Adding and Subtracting Polynomials - Exercise Set - Page 349: 65
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