By the table, it seems to be that f = 1/2x
 
        
             
        
        
        
9514 1404 393
Answer:
   20
Step-by-step explanation:
As with any evaluation problem, take it step by step according to the order of operations.
The first thing you need to do here is compute a#b.
The given definition can be simplified a bit for evaluation purposes:
   a#b = a²b -ab² = ab(a -b)
Then for a=3 and b=-2, you have ...
   (3)#(-2) = (3)(-2)(3 -(-2)) = -6(5) = -30
Now, you are in a position to evaluate the expression you're asked for.
   
 
        
             
        
        
        
Answer:
a=120
b=240
Step-by-step explanation:
if x=12
a=5×2×2×2(x-5)
5×2=10×2×2=40
40(x-5) 40x-200
200=40×\40x=5
b=2×10×12=240
a=120
b=240