Square roots of numbers are called numbers. Unit Imaginary Number i is a number whose square is -1. That is, In other words,. negative imaginary

a. d. b. e. c. f. d. g. Pattern?

So, to calculate any high power of i, you can convert it to a lower power by taking the closest multiple of 4 that's no bigger than the exponent and subtracting this multiple from the exponent. Example:

For every positive real number r,

Remember, i is still a square root. So, we cannot have i left in the and we must rationalize! denominator