Answer:
is it all of them 
Step-by-step explanation:
 
        
             
        
        
        
Step-by-step explanation:  1 will now become a 2, so the answer is 1.2.1,
 
        
             
        
        
        
Answer:
I think it is ± 2y−2X1 −22y− 2X1−2+4=x2=x
Step-by-step explanation:
hope this helps if not let me know
 
        
             
        
        
        
Before you use the quadratic formula, you have to make sure the equation itself is a quadratic and that a and b are not 0.