Question

pls solve this class11​

Answer 1

i² = -1 , i⁵ = i³. i² = -i × -1 = i

Evaluate

[ i¹⁸ + (1/i)²⁵ ]

[ (i²)⁹ + (1/i²⁵) ]

[ (-1)⁹ + 1/(i⁵)⁵ ]

[ -1 + 1/(i)⁵ ] = -1 + 1/i = (-i + 1)/i is Answer