Question

How do you perform the operation and write the result in standard form given `-8i(9+4i)`?

Answer 1

`color(purple)(=> 32 - 72 i`

Explanation:

`-8i * (9 + 4 i)`

`=>-9 * 8 i - 8i * 4i`, removing the bracket.

`=> -72i + 32` as `i ^2 = -1`