Conjugate of Complex Number
If z = a + ib, then the conjugate of z is denoted by 
and is defined by
= a − ib
Division of Complex Number
Multiplying the numerator and denominator by the conjugate of the denominator.
Properties of Complex Conjugate
If z = a + ib, then the conjugate of z is denoted by and is defined by
= a − ib
Division of Complex Number
Multiplying the numerator and denominator by the conjugate of the denominator.