Question

express in the form of a+ib​

Answer 1

(1+i)^4/(1-i)^4

=(1+i^2+2i)^2/(1+i^2-2i)^2

={1+(-1)+2i}^2/{1+(-1)-2i}^2

=(2i)^2/(-2i)^2

=4i^2/4i^2

=1

so, in the form of a+ib is

1+0.i

Answer..