Complex Arithmetic/Examples/conj ((z 2 + z 3) (z 1 - z 3))

Example of Complex Arithmetic
Let $z_1 = 1 - i$, $z_2 = -2 + 4 i$ and $z_3 = \sqrt 3 - 2 i$.

Then:
 * $\overline {\paren {z_2 + z_3} \paren {z_1 - z_3} } = -7 + 3 \sqrt 3 + \sqrt 3 i$