Question

Re (z1-z2) = Re (z1) - Re (z2)

Answer 1

Answer:

It is the identity of the substraction of the complex number.

Answer 2

Let zz1 =a+ib

z2 =x+iy

z1 z 2 =(a+ib)(x+iy)

ax−by+i(bx+ay)

Re(z 1 z 2 )=ax−by

Re(z1 z 2 )=Rez 1 Rez 2 −Imz 1 Imz 2