Question

what is the simplified form of -9m^-2n^5*2m^-3n^-6

Answer 1

this expression would simplify down to $\frac{-18}{m^5n}$

Answer 2

-9m^-2 * 2m^-3  =  -18m^-5
n^5 * n^-6 =  n^-1

combining these we get:-

-18m^-5 n^-1
which can also be written as
-18 / m^5 n