Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 6 - Algebra: Equations and Inequalities - 6.1 Algebraic Expressions and Formulas - Exercise Set 6.1 - Page 349: 82


Doesn't make sense

Work Step by Step

The terms 13$x^{2}$ and 10x cannot be combined 23$x^{2}$ because 13$x^{2}$ and 10x are not like terms. Like terms must have the EXACT same variable parts. The two terms have different variable parts: one has the variable part $x^{2}$ and the other just has a plain x. There is nothing that can be done to combine the two terms (as written) using either addition or subtraction.
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