Step-by-step explanation:
(a+bi)2
=a2 +2abi +b2i2
=a2 +2abi + b2. (-1)
=a2 -b2 +2abi
Answer = (a+b(a-b) +2abi
 
        
             
        
        
        
Answer:
3/12  and 5/x
12 times 5 is 60 so 3 times 20 shall be 60
3/12 = 5/20
:) 
 
        
             
        
        
        
Answer:
all work is shown and pictured
 
        
             
        
        
        
This is the ans plus u can use maths from Microsoft app for these type of questions