Answer:
x^3+9x^2-6x-54=0
Step-by-step explanation:
or, x^2(x+9)-6(x+9)=0
or,(x+9)(x^2-6)=0
Either
x+9=0
x=-9
Or
x^2-6=0
x^2=6
x=-9,x^2 =6
