let f(x) = x^2 - 3x + 3 and g(x) = 3x^3 - 5x^2 - 3x + 12. The solutions of the equation f(x) = 0 are also solutions of the equation g(x) = 0. The equation g(x) = 0 has a third solutions besides the two solutions of f(x) = 0; what is the third solution?