Question

How do you simplify `(-2i)(-6i)(4i)`?

Answer 1

`-48i`

Explanation:

`color(orange)"Reminder " color(red)(bar(ul(|color(white)(2/2)color(black)(i^2=(sqrt(-1))^2=-1)color(white)(2/2)|)))`

We can find the product of the first pair.

`"That is " (-2i)(-6i)=12i^2=-12`

`"Then " -12(4i)=-48i`