Question

Simplify: $z=\frac{1-i}{1+i}$.

Answer 1

Now,

$z=\frac{1-i}{1+i}$

or, $z=\frac{(1-i{)}^2}{1^2-i^2}$

or, $z=\frac{-2i}{2}$

or, $z=0-i$.