Question

express the complex number 2-i divided by (1-i) (1+2i) in a+ib form

Answer 1

Step-by-step explanation:

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

=2-i/1+2i-i+2

=2-i/3+i

=(2-i)(3-i)/3²-i²

=6-2i-3i+i²/9+1

=5-5i/10

=1-i/2

=1/2-i(1/2)