Introductory Algebra for College Students (7th Edition)

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: 82

Answer

8y$^4$+2y$^2$+20

Work Step by Step

Distribute the negative sign to the parentheses and then combine like terms vertically. $\qquad3y^4-4y^2+7$ $\underline{-(-5y^4-6y^2-13)}$ $\qquad\qquad\downarrow$ $\quad3y^4-4y^2+7$ $\underline{+\,5y^4+6y^2+13}$ $\quad8y^4+2y^2+20$
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