Question

show that i+i^15+i^17+i^19​

Answer 1

Answer:

1. 0

Step-by-step explanation:

=i+i^15+i^17+^19

=i+(i^2)^7.i+(i^2)^8.i+(i^2)^9.i

=i+(-1).i+(1).i+(-1).i

=i-i+i-i

=0

Answer 2

Answer:

i^1 + i^15 + i^17 + i^19

i^1+15+17+19

i^52