One factor of x^3+4x^3-11x-30 is x+2. What are the other factors?

x-3 and x+5

would you like me to explain how to do it?

o wait that is only if you meant : x^3+4x^2-11x-30

You are given one factor. Upon dividing, the cubic reduces to a quadratic; factor it and you'll have your other two factors.