Question

If z1 has positive real part and z2 has negative imaginary part , then z1+z2/z1-z2

Answer 1

Answer:

The value of (z1+z2)÷(z1-z2) = i

Step-by-step explanation:

I am considering an example case satisfying the given condition of positive real part for z1 and negative imaginary part for z2

Let z1 be 1;

Let z2 be -i

(z1+z2)÷(z1-z2)= (1-i)÷(1+i)

                       =(1-i)² ÷ 2

                        = i

The value of (z1+z2)÷(z1-z2) = i