Question 231145
(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