The factors of 
, we can factor out the common factor, which is x. Now, we can factor the quadratic expression
 further using the difference of squares formula. The correct option is : x(x - 9)(x + 9)
The factors of 
, we can factor out the common factor, which is x:

using the difference of squares formula 


So, the expression 
 can be factored as 
. Among the options:
x(x - 9)
x(x + 9)
x(x - 9)(x + 9)
x^2 - 9
The correct answer is option 3: x(x - 9)(x + 9), as it contains only factors of 
.