How do you simplify #b^3(m^-3)(b^-6)#?
Any negative exponent will make the number become its reciprocal.
If the negative number is in the numerator, then it will go to the denominator, and if it is in the denominator then it will go to the numerator.
Exponent rules can be tricky to figure out at first. Fortunately, these are quite simple.
In the problem you have, you need to at least know both the Negative Exponent Rule and the Product Rule.
The Negative Exponent Rule states:
The Product Rule states:
So, if you have