SOLUTION: Evaluate: (4+3i)(5-5i)(-3+4i) Show work. (No calculator!) Thanks for help!

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Question 231145: Evaluate: (4+3i)(5-5i)(-3+4i)
Show work. (No calculator!)
Thanks for help!
Answer by user_dude2008(1862) About Me  (Show Source):
You can put this solution on YOUR website!
(4+3i)(5-5i)(-3+4i)
(20-20i+15i-15i^2)(-3+4i)
(20-20i+15i+15)(-3+4i)
(35-5i)(-3+4i)
-105+140i+15i-20i^2
-105+140i+15i+20
-85+155i

Answer: (4+3i)(5-5i)(-3+4i)=-85+155i