Question

( z + a ) ( $\overline{z}+a)$ , where a is real , is equivalent to :

• A.
• B.
• C.
• D.

Answer 1

The correct option is C

z$\overline{z}=|z{|}^2$

So ( z +a ) ( $\overline{z}+a)$ = (z +a ) $\overline{(z+a)}=|z+a{|}^2$