Question

Evaluate: [i^18+(1/i)^25]^3

Answer 1

Answer:

This is a shorter method.

Point to remember- i^4k= 1 ( if the power of i is divisible by 4 then it is equal to 1)

Answer 2

Step-by-step explanation:

(i^3)6 + (1/I ^4)6*i )3

(-i^6 + 1/i )3

(-1 + 1/i)3

u i (a+b )3=a3+b3+3a2b+3ab2

-1+1/-I +3/i +3

-2+2/i

-2i+2