Answer:
See below
Step-by-step explanation:
You pull-out what is common.
2[tex]x^{3} -16x^{2} -18x[/tex]
[tex]2x(x^{2} -8x-9)[/tex]
2x(x-9)(x+1)
To verify, set each answer = 0
2x = 0, x=0
x-9 = 0, x=9
x+1 = 0, x=-1
Now, plug each value back into the equation and make sure each one equals 0.