Question

Efetuei i = -1 a) (1/2+i).(1/2+i) b) (1+i).(2-i).(3+2-i).

Answer 1

a) (1/2+(-1)).(1/2+(-1))
=(1/2-1).(1/2-1)
=-1/2.-1/2
=-1/4

b)(1+(-1)).(2-(1)).(3+2-(-1)
=0.1.6
=6