C) because it equals each other
        
             
        
        
        
Answer:
The axis of symmetry
The x-value of the vertex
 
        
             
        
        
        
I need the actual problem to answer this question
        
             
        
        
        
For this case we must simplify the following expression:

We solve the operation of the second parenthesis, taking into account that different signs are subtracted and the sign of the major is placed:

We multiply:

We eliminate the parentheses:

We add similar terms, taking into account that equal signs are added and the same sign is placed:

Answer:
The simplified expression is: 
 
        
             
        
        
        
Answer:Im not ure but it looks like the answer would be 0.8
Step-by-step explanation: