First you distribute the 3 
(3x-12) (x+5)=0
then you set each equation equal to zero
3x-12=0 & x+5=0
then you solve for x 
x =4, -5
        
                    
             
        
        
        
I think it's 0 since anything multiplied by 0 is, well, 0! No matter what the sign is. I believe the correct answer is 0 :)
        
                    
             
        
        
        
Answer:
x=20
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
c/8
Step-by-step explanation:
This is division. This can be figured out by reading "split". If something is to be split, it is the dividend.
 
        
                    
             
        
        
        
Answer:
division involves 5 steps:
D Divide
M Multiply
S Subtract
B Bring down
R Repeat or Remainder
Step-by-step explanation: i hope it helped