SOLUTION: (-6+2i)(7-i)(4+3i)

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Question 186847This question is from textbook Algebra 2
: (-6+2i)(7-i)(4+3i) This question is from textbook Algebra 2

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
%28-6%2B2i%29%287-i%29%284%2B3i%29 Start with the given expression.


%28-42%2B20i-2i%5E2%29%284%2B3i%29 FOIL the first two binomials


%28-42%2B20i-2%28-1%29%29%284%2B3i%29 Replace i%5E2 with -1


%28-42%2B20i%2B2%29%284%2B3i%29 Multiply


%28-40%2B20i%29%284%2B3i%29 Combine like terms.


-160-40i%2B60i%5E2 FOIL


-160-40i%2B60%28-1%29 Replace i%5E2 with -1


-160-40i-60 Multiply


-220-40i Combine like terms.


So %28-6%2B2i%29%287-i%29%284%2B3i%29=-220-40i