Question

Please write down and show every step in your work.
Simplify and write in standard form
$6+9i+(4i)(2i)$

Answer 1

Answer:

-2 + 9i

Step-by-step explanation:

Start by performing the multiplication 4i(2i):  the end result is -8.

Then we have 6 + 9i - 8.

Combining ilke terms, we get:

-2 + 9i