Answer
-11$z^{2}$-3z-1
Work Step by Step
(-3$z^{2}$+5z-5)+(-8$z^{2}$-8z+4)
=-3$z^{2}$+5z-5-8$z^{2}$-8z+4
=-3$z^{2}$-8$z^{2}$+5z-8z-5+4
=-11$z^{2}$-3z-1
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 10 - Section 10.1 - Adding and Subtracting Polynomials - Exercise Set - Page 703: 3
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