Answer
$ x^2 + 7x + 4$
Work Step by Step
$(-x^2+3x) + (2x^2+5) + (4x-1)$
$=-x^2 + 2x^2 + 3x + 4 x + 5 - 1$
$= x^2 + 7x + 4$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
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 373: 65
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