Work Step by Step
RECALL: (1) $a(b-c) = ac - bc$ (2) $i^2=-1$ Use rule (1) above to obtain: $=-6i(3) - (-6i)(5i) \\=-18i - (-30i^2) \\=-18i+30i^2$ Use rule (2) above to obtain: $=-18i +30(-1) \\=-18i + (-30) \\=-30-18i$
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.