Question

1. Simplify each of the following using "i" (1) -36 (ii) 25.-4
2. Find the value of 1 + i^10 + i^20 + i^30​

Answer 1

Answer:

1) Sorry, I didn't understand the question.

2) 1+ i^10+i^20+i^30

= 1+ (i^2)^5 +( i^2)^10 + (i^2)^15

= 1 + (-1) ^5 + (-1) ^10+(-1) ^15

=1-1+1-1

=2-2

=0