Question

help me with this because I have problem doing it

Answer 1

Answer:

A   12+6i

    ----------

     5

Step-by-step explanation:

6

-----------

2-i

Multiply by the complex conjugate

6               2+i

----------- *------------

2-i               2+i

12 +6i

-------------

4 -2i +2i -i^2

12+6i

----------

4 - (-1)

12+6i

--------------

5