Question 271037
we start with
{{{(-3x)^(3/5)}}}
step 1 - the numerator is the power of the base and the denominator is the index number. we get
{{{(-3x)^3)^(1/5)}}}
and then
{{{(-27x^3)^(1/5)}}}
finally 
{{{root(5,(-3)^3))}}}