If z1 = 2 – i, z2 = 1 + i, find 
It is given in the question that,
z1 = 2 – i
z2 = 1 + i
∴ 
= 
= 
= 
= 
= 
= 
= 
= 
= 
Hence, the value of 
is 
11
If z1 = 2 – i, z2 = 1 + i, find
It is given in the question that,
z1 = 2 – i
z2 = 1 + i
∴
=
=
=
=
=
=
=
=
=
Hence, the value of is