5. Put 2 of fingers up . Then put 3 more fingers up . Count the total
        
                    
             
        
        
        
4b²+20b+25=0
Divide everything by 4 
b²+5b+ 6.25=0 
use the quadratic formula 
x= (-b+ or - √b²-4ac) /2a
x= (-5 + or - √5²-4*1*6.25) /2(1)
x= -5/2 so 
in this case, b= -5/2
        
             
        
        
        
Tens refers to the unit 10,
This means that 45 10s is equal to:
45*10 = 450
Hope this helps! :)
        
                    
             
        
        
        
Answer: 33554432
Step-by-step explanation:
8 x (2 ^ (23 - 1)) = 33554432