Question

Negative Exponents- All of the following expressions are equal except _____.

Answer 1

7 is not equal to the others

using the laws of exponents

$7^{2}$ / $7^{3}$ = 1 / $7^{3-2}$ = $\frac{1}{7}$

$7^{-1}$ = $\frac{1}{7}$

Apart from 7 the other 3 all equal $\frac{1}{7}$