The graph of f(x) = (0.2)(x^4 + x^3 – 12x^2) is shown. On a coordinate plane, a graph decreases through (4, 0) to (3, negative 11) and then curves up to (0, 0). It then curves down to (2, negative 4), and curves up through (3, 0). Based on the graph, what is the solution to (0.2)(x^4 + x^ 3 – 12x^2) < 0?