Answer:
D) 1
Step-by-step explanation:
When you start raising i to certain powers, you begin to notice a pattern.

This cycle repeats forever. Since 84 is a multiple of 4, i^84 must be 1. Hope this helps!
Answer:
The photo is not showing up
Answer:
I think It might be A
Step-by-step explanation:
Don't trust me tho
Do you need the expanded notation form, or expanded factor form?