Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 5 - Section 5.3 - Addition and Subtraction of Polynomials - Exercise - Page 221: 33



Work Step by Step

We simplify by adding the constant terms as follows $$-15+8+13=6,$$ adding the $y$-terms, $$-3y-6y+4y=-5y$$ adding the $y^2$-terms, $$4y^2+7y^2-3y^2=8y^2.$$ The result is $$8y^2-5y+6.$$
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