The solutions to the equations graphically are x = -3.5, 0 and 6.8
Solving the equation graphically
From the question, we have the following parameters that can be used in our computation:
x³ - 3.3x² - 23.8x = 0
Next, we plot the graph of the equations
See attachment for the graph
From the graph, we have solution to the system to be the point where the curve intersects with the x-axis
In this case, the points are located at (-3.5, 0), (0, 0) and (6.8, 0)
So, the solutions are x = -3.5, 0 and 6.8