Question

Simplify.
-2i× (-3i)
-6​

Answer 1

(-2 i) * (-3 i) = -6

Explanation:

This is a product between imaginary numbers, so have in mind how the imaginary unit multiplies by itself:
`i\,*\,i = i^2=-1`

So let's work on the product:

`-2\,i\,*\,(-3\,i)= (-2)\,*\,(-3)\,*\,i\,*\,i =(6)\,* i^2\,=(6)\,*\,(-1)= -6`