Complex Multiplication is Associative/Examples

Examples of Use of Complex Multiplication is Associative
=== Example: $\paren {2 - i} \paren {\paren {-3 + 2 i} \paren {5 - 4 i} } = \paren {\paren {2 - i} \paren {-3 + 2 i} } \paren {5 - 4 i}$ ===