I need help getting the answers for these 2 questions!

I want to see if i did them right... (because i dont have an answer sheet)

1) Solve 12x^3 - 16x^2 + 7x -1

Let f(x) = 12x^3 - 16x^2 + 7x -1

2) Solve the inequality:

3x / (x^2 -4) < -1

*note: where the "<" is, its supposed to be less than/equal to. (i just cant find a key for it :P )

Thanks again!