Question

find the value of the following expression:(1)i+i^2+i+^3+i^4

Answer 1

i+i^2+i+i^3+i^4 =i-1+i-i-1 =i-2.......(i^2=-1,i^3=-i,i^4=-1) Or else if question is i+i^2+i^3+i^4 =i-1-i-1 =-2