Need to solve complex numbers (i+j)^2 Solution i and j are not different they are one and the same used for the representation of imaginary numbers in a complex number so the given expression can be written as (2i)^2 or (2j)^2 which results in -4 (as the product of 2*2 is 4 and i^2 =-1 ).

1. Need to solve complex numbers
(i+j)^2
Solution
i and j are not different they are one and the same used for the representation of imaginary
numbers in a complex number
so the given expression can be written as (2i)^2 or (2j)^2
which results in -4
(as the product of 2*2 is 4 and i^2 =-1 )