Answer:
r^-6 OR 1 / (r^6)
Explanation:
For this expression, we can use exponential power rules to simplify.
Power to a power, you multiply the exponents.
So, (r^3)^-2 == r^-6
We can use the fact that negative exponents will be the base to the power in the denominator.
r^-6 == 1/(r^6)
Cheers.