SOLUTION: How would I solve the problem "(7i)(-6i)(4-8i)"?

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Question 893714: How would I solve the problem "(7i)(-6i)(4-8i)"?
Found 2 solutions by Alan3354, josgarithmetic:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Multiply the 1st 2 terms, then multiply by the 3rd term.

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
You would use the same as what you already learned.

7%2A%28-6%29%2Ai%2Ai%284-8i%29
-42%2Ai%5E2%284-8i%29
-42%28-1%29%284-8i%29
42%284-8i%29
highlight%28168-336i%29