Question

. Simplify the expression (–2i)(8i). Show your work and describe your steps.

Answer 1

Is this i as in the imaginary number?
If so:
-2*8(i²)
As you should know i² = -1
= -16(-1)
= 16

Answer 2

The given expression is (-2 i)(8 i)

= (-2) × (8) (i)× (i)

= -16 i²

as, i²= -1 [∴ i =√-1 so i× i=i²=√-1 × √-1≠
`√(-1*-1)` but =
`-√(-1*-1)`=-1 ]

= -16 × (-1)

= 16