Question 294045
Your 3(-x) makes no sense.  I will assume that you meant to type x^(-3).

Using the rules of negative exponents, x^(-3) becomes 1/x^3.

We now have the problem 1/(x^3) divided by x^2.

Using the rules of division of fractions, the problem becomes

1/(x^3) times 1/x^2 = 1/x^5