As I look into the problem with a deeper meaning then math I realize this answer can be not as hard as it appears and it could be hard to answer it
        
             
        
        
        
N / 2
400 / 2 = 200
200 / 2 = 100
100 / 2 = 50
50 / 2 = 25
25 / 2 = 12.5
        
             
        
        
        
Answer:
s-12=20
:. 20+12=s 
20+12=32
<h2>your answer is 32</h2><h2>s=32</h2>
Step-by-step explanation:
<h2>hope its fine buddy</h2>
 
        
                    
             
        
        
        
If you are looking for the expanded version, this is it. It is also possible to group either an a from (a^2 + 2b) or a b from (2ab + b^2). Hope this helps!
 
        
                    
             
        
        
        
8.57 for the first one and, I’m not sure a bout the second time though