Question

Select the correct answer.
What is the value of this expression?
(10-4i) (4-5i) + (-15 + 20i)

Answer 1

Answer:

5-46i

Step-by-step explanation:

first multiply your (10-4i)(4-5i) so that would be 20-66i when simplified. then add that to -15+20i so it would look like 20-66i+(-15+20i). then simplify and you should get 5-46i.