Complex Arithmetic/Examples/(-1 + 2i) (7 - 5i) + (-1 + 2i) (-3 + 4i)

Example of Complex Arithmetic

 * $\paren {-1 + 2 i} \paren {7 - 5 i} + \paren {-1 + 2 i} \paren {-3 + 4 i} = -2 + 9 i$