imaginary unit = First blank -1 = second blank
Work Step by Step
We know that his number is not real so therefore it is an imaginary unit that can be very helpful in some sitautions, and it has a value of -1 when squared.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.