This is a question from my mid term review, my professor didnt post the answer so im not sure if my answer is correct. No one ive reached out to knows the answer either. It'll be greatly appreciated if someone could help me out with this proble :]
Update:Including the steps
Copyright © 2024 1QUIZZ.COM - All rights reserved.
Answers & Comments
i = √-1
(-81) x (-4√-1) = -81 x -4i = 324i
324•i