If Q = 11 - 5i, E = 11i, and D = 2i + 3, find Q*E*D.
You can multiply out just like "i" was a variable instead of sqrt(-1), and then use i^2 = -1 occasionally.
Q×E×D=(11−5i)(11i)(2i+3)=(121i−55i2)(2i+3)=(55+121i)(2i+3)
Can you expand the rest?