SEE ATTACHED IMAGE TO OBSERVE THE GRAPH OF THE FUNCTION. For this case, the first thing we should see are the cut points with the x axis. We note that the graph cuts to the x-axis at x = -2 Therefore, x = -2 is the real solution to the polynomial. Also this function: x3 + 6x2 + 12x + 8 It can be rewritten as: (x + 2) ^ 3 From where we conclude that its roots are: x = -2 (with multiplicity 3) Answer: the equation x3 + 6x2 + 12x + 8 = 0 have: x = -2 As a real solution with multiplicity 3.
You didn't show the graph. Anyway, that equation is a perfect cube and equals (x +2)^3 or (x +) * (x +) * (x +) Therefore, it has 3 real number solutions and ALL of those solutions equal -2