#### Answer

3$z^{3}$+15$z^{2}$-10z-5

#### Work Step by Step

Given expression: (3$z^{3}$-4z+7$z^{2}$+(8$z^{2}$-6z-5)
Simplify parenthesis: 3$z^{3}$-4z+7$z^{2}$+8$z^{2}$-6z-5
Combline like terms: 3$z^{3}$+15$z^{2}$-10z-5

Published by
Prentice Hall

ISBN 10:
0133281140

ISBN 13:
978-0-13328-114-9

3$z^{3}$+15$z^{2}$-10z-5

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