Answer
4$x^{2}$ + 2x - 4
Work Step by Step
(7$x^{2}$ + 2x -9 ) + ( -3$x^{2}$ + 5) =
( 7$x^{2}$ -3$x^{2}$ )+ 2x + (-9 +5) = combine like terms
4$x^{2}$ + 2x - 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 371: 8
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