I just can't figure out these 4...Would be very happy if someone could help me out :o

Solve the equations:

1) (2x^3 -3x^2 -3x+2) / (x+1) < 0

2) (x^3 -2x^2 -3x) > 0

Solve the divisions

3) (2x^3 +9x^2 -7x -4) : (x^2 +2x -3)

4) x^4 : (x^2 - 4)

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