Answer:

Step-by-step explanation:
Given
4
 - 10
 + 7
 ( add the coefficients of the terms )
= (4 - 10 + 7) 
= 1
= 
 
        
             
        
        
        
3 + (2 + 8)^2 / 4 * (1/2)^4
3 + 10^2 / 4 * (1/2)^4
3 + 100/4 * (1/2)^4
3 + 25 * 1/16
3 + 25/16
48/16 + 25/16
73/16
4 9/16 <==
        
             
        
        
        
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Answer:
mAB = 49
mABC = 253
mBAC= 156
mACB = 311
Step-by-step explanation: