Question

Which expression is equivalent to (3k-2i)squared, where i is the imaginary unit?

Answer 1

Let's actually do it to find out:

`(3k-2i)(3k-2i)`

Simplify using FOIL (note that i squared is -1):

`9k^2-6ki- 6ki + (4*-1)`

Simplify further:

`9k^2-12ki-4`

That's your answer! Hope it helps!