Answer
$\frac{1}{z^8}$
Work Step by Step
Use the quotient rule and the definition of negative exponents.
$\frac{z^4}{z^{12}}=z^{4-12}=z^{-8}=\frac{1}{z^8}$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Appendix B - Exercise Set - Page 742: 52
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