Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 5 - Exponents and Polynomials - 5.1 - Addition and Subtraction of Polynomials - Problem Set 5.1: 37

Answer

5$n^{2}$ + 2n + 3

Work Step by Step

We write the expression to express this addition problem: (3$n^{2}$ - n + 7) - (-2$n^{2}$ - 3n + 4) = Remove parantheses. 3$n^{2}$ - n + 7 + 2$n^{2}$ + 3n - 4 = Group similar terms. (3$n^{2}$ +2$n^{2}$) + (3n - n) + (7 - 4) = Simplify. 5$n^{2}$ + 2n + 3
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