Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 5 - Section 5.4 - Adding and Subtracting Polynomials - Exercise Set - Page 372: 27



Work Step by Step

$(0.7x^{2}+0.2x-0.8)-(0.9x^{2}+1.4)$ Remove both parentheses and change the sign of every term inside the second one: $0.7x^{2}+0.2x-0.8-0.9x^{2}-1.4=...$ Simplify by combining like terms: $...=(0.7-0.9)x^{2}+0.2x-(0.8+1.4)=-0.2x^{2}+0.2x-2.2$
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