Division of Complex Numbers/Also presented as

Division of Complex Numbers: Also presented as
The operation of complex division on $z_1$ by $z_2$ can also be presented as:
 * $\dfrac {z_1} {z_2} = \dfrac {a_1 a_2 + b_1 b_2 + i \paren {a_2 b_1 - a_1 b_2} } { {a_2}^2 + {b_2}^2}$