Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 10 - Section 10.1 - Adding and Subtracting Polynomials - Exercise Set - Page 704: 18

Answer

12$x^{3}$-10$x^{2}$+15x

Work Step by Step

(11$x^{3}$+15x-9)-(-$x^{3}$+10$x^{2}$-9) =11$x^{3}$+15x-9+$x^{3}$-10$x^{2}$+9 =11$x^{3}$+$x^{3}$-10$x^{2}$+15x-9+9 =12$x^{3}$-10$x^{2}$+15x
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