Express the radical expression with integer or fractional exponents by filling in the blanks. Enter fractions as c/d or -c/d, where c and d are positive integers with no common factors greater than 1.

$\displaystyle{a}{{b}}^{{2}}{\sqrt[{{3}}]{{{{a}}^{{2}}{{b}}^{{2}}}}}={{a}}^{?}{{b}}^{?}\usepackage{cmbright}\Huge\$