Respuesta :

Helpbook

Answer:

r=-3, 3,0

factor -

3r(r-3) (r+3) ,

solution-

3r=0 , r=0

3r^2-9r =0

3r^2=9r

r=3,

r+3=0

r= -3

Chelboy

Answer:3r(r-3)(r+3)

Step-by-step explanation:

3r(r-3)(r+3)

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