4x^3 + 12x^2 - 9x - 27 = 0
x^2 (x + 3) - 9 (x + 3) = 0
(square root x^2 - square root 9) (x +3) = 0
x = -3; x = -3
x >= -6
Hope that helps.
Answer:
k(0,-1),g(1,-4),z(-4,-3)
