Find in index notation
\frac{a}{b^3c^2}\\if \\a = \left ( \frac{2}{5} \right )^4 \\b = \left ( \frac{-1}{3} \right ) \\c = \left ( \frac{3}{5} \right )^2
I know this is a simple case of substitution but i'm not sure how this can be expressed in index notation. Any help appreciated.