Which expression is equivalent to x^-5/3

We are asked to find an expression that is equivalent to the expression . Since we have a negative exponent, we can make it a positive one by putting the whole expression under 1. This gives us . Notice that the negative sign is gone from the exponent. Now, we can convert the fractional exponent to radical form. We can do this by following - 
. Here, we get that . So, when we convert the expression to radical form using the formula we got, we get , which is our answer. Hope this helped!