Answer:
-i
Step-by-step explanation:
i^17 = i
i^12 = 1
i^26 = -1
answer to -1 × 1 ×i = -i
i^17 × i^12 × i^26 =i ⁽¹⁷⁺¹²⁺²⁶⁾ = i⁵⁵ = i ⁴*¹³⁺³ = -i {i⁴ⁿ⁺³ = -i}
Note 55 = 4*13 +3 = 52 +3