Question

Show that the following is a group
\( ( \{ 1, a, B\}, \cdot) \) such that \( \large a= {-1+i\sqrt{3} \over 2}\) and \( \large B= {-1-i\sqrt{3} \over 2}\) and \( \cdot \) is complex number multiplication

Answer 1

show 4 things: closure, identity, inverse, associative

Answer 2

ya but i dont get how to do the table. How wld i draw it?

Answer 3

what table?