Question 290467
Simplify. Write answer with positive exponents.
(b-2)
______-2
(b-5)
Assume you mean
{{{((b^(-2))/(b^(-5)))^(-2)}}} 
You can do this a couple ways, here is one way:
{{{((b^(-2*-2))/(b^(-5*-2)))}}} = {{{b^4/b^10}}} = {{{1/(b^(10-4))}}} = {{{1/b^6}}}