Question

como calcular 3.(1-i)+(2+i).(2-i)=

Answer 1

 3.(1 - i) + (2 + i).(2 - i) =
3 - 3i + 4 - i² = 
3 - 3i + 4 - (-1) = 
3 - 3i + 4 + 1 = 
8 - 3i

Answer 2

3(1-i)+(2+i)(2-1)
3-3i+(4-i²)
3-3i+4-(-1)
-3i+4+1+3
-3i+8