SOLUTION: MULTIPLY AND SIMPLIFY 5i(4i-6)

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Question 6351: MULTIPLY AND SIMPLIFY
5i(4i-6)

Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
5i(4i-6) becomes 20i%5E2+-+30i

Now, i%5E2+=+-1, so we get -20-30i --> -10(2+3i)

jon.