How can an expression written in either radical form or rational exponent form be rewritten to fit the other form?

Any radical of the form  can be written as .
Also, as long as everything is defined expressions of the form  as . Note that the denominator of the exponent indicates the type of radical and the numerator of the exponent represents the power which can be applied either inside or outside of the radical.

Most of the people don’t make the sense of taking it