Question 85427
Rewrite the negative powers as reciprocals of the corresponding positive powers:

{{{a^-1}}} = {{{1/a}}}
{{{b^-2}}} = {{{1/b^2}}}

Multiply:

({{{1/a}}})({{{1/b^2}}})({{{c^3/1}}} =
{{{c^3/ab^2}}}