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Matthew Padilla
Mathematics
28 May, 18:01
What is the answer to this?
(2i-6) (3i-9)
+1
Answers (
1
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Wesley Burgess
28 May, 18:12
0
Remember that i² = - 1. Using FOIL ...
(2i-6) (3i-9) = 6i²-36i+54
Now simplify by subbing in - 1 for i².
6 (-1) - 36i+54 = 48-36i
answer: 48-36i
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