How to simplify ? Thanks.
Hello,
A conjugate of a complex number is defined to be
What's good about it is if you multiply a complex number by its conjugate :
(using the identity (x-y)(x+y)=x²-y²) and that's a real number.
So the main idea is to multiply both numerator and denominator by the conjugate of the denominator :
expand the numerator and separate real and imaginary parts.