You are right. 5 is correct.
 
        
             
        
        
        
X+3 or x-8 
These answers will both work!
        
             
        
        
        
If you want to check if your answer is correct, expanding it all out will help!
(x-6)(x+2)=0 <-- Use FOIL tactic 
x²+2x-6x-12=0
x²-4x-12=0 
As you can see, this is identical to the initial equation given. The x values would be 6 and -2, as seen from the factored equation. 
Hope I helped :) 
        
             
        
        
        
 Answer:
-7/2
Step-by-step explanation:
 
        
                    
             
        
        
        
The ad was around 15 lines.
25.10/5.02 = 5
and then 5 * 3 = 15 lines