Answer:
x^2 - 6x + 9 = (x-3)^2
Step-by-step explanation:
 
        
             
        
        
        
It’s the last one, D I guess. It’s the square root of the number surrounding x, so it’s going to be the one with the larger numbers
        
                    
             
        
        
        
Answer:
216
Step-by-step explanation:
300 x .28 = 84
300 - 84 = 216
 
        
                    
             
        
        
        
I’m not sure, you should install photomath tho it should say