Question

Simplify 3^-9 / 3^-12.
1/3^3
1/3^21
3^3
3^21

Answer 1

C) 3^3

Explanation:

Answer 2

Here's a rule that applies to this expression:

1. Dividing exponents of the same base:
   `(x^m)/(x^n)=x^(m-n)`

For this, just divide:

`(3^(-9))/(3^(-12))=3^(-9-(-12))=3^3`

Your answer is 3^3, or the third option.