#### Answer

$z^{4}$

#### Work Step by Step

Step 1: $\frac{z^{12}}{z^{8}}$
Step 2: $z^{12-8}$
Step 3: $z^{4}$

Published by
Brooks Cole

ISBN 10:
0-53449-636-9

ISBN 13:
978-0-53449-636-4

$z^{4}$

Step 1: $\frac{z^{12}}{z^{8}}$
Step 2: $z^{12-8}$
Step 3: $z^{4}$

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