Answer
$\frac{1}{y^4}$
Work Step by Step
When we divide exponents with the same base, we subtract the exponents. Rewrite the negative exponent with positive one.
$y^{8-12}=y^{-4}$
$\frac{1}{y^4}$
College Algebra (11th Edition)
by Lial, Margaret L.; Hornsby John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671791
ISBN 13:
978-0-32167-179-0
Chapter R - Section R.6 - Rational Exponents - R.6 Exercises - Page 56: 20
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