Respuesta :

Answer:

-3x(x+5)(x-4)

Step-by-step explanation:

y=-3x^3 -3x^2 +60x

=-3x (x^2 -x -20)

= -3x (x-4)(x+5)

lillygiroux
x1 = -5 , x2 = 0 , x3 = 4