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 - Practice: 8

Answer

$-a^{2}-b^{2}$

Work Step by Step

$(2a^{2}-ab+6b^{2})+(-3a^{2}+ab-7b^{2})$ Remove both parentheses: $2a^{2}-ab+6b^{2}-3a^{2}+ab-7b^{2}=...$ Combine like terms: $...=(2-3)a^{2}+(1-1)ab+(6-7)b^{2}=...$ Simplify: $...=-a^{2}-b^{2}$
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