Think about imaginary as another type of number, for example 1 is an identity number anything multiplied by 1 gives you back that same number. With imaginary numbers the same understanding of numbers can be applied.
Great can you provide me some examples? Yes just like any other number imaginary numbers oblige the rules of exponents for example.
Side note, it might not be clear but there is an actual pattern in here with the imaginary numbers, try and see if you can spot it.