Answer
Because 1 is always being divided by $x^{n}$ if it equates to a number other than 0 or 1.
Work Step by Step
Eg) $\frac{1}{x^{n}}$ where $x$=5 and $n$= 2
equates to $\frac{1}{25}$ which equals $0.04$ and $0.04\ne0$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 5 - Section 5.2 - Negative Exponents and Scientific Notation - Exercise Set - Page 356: 129
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