Answer is C I hope it helps
-5 + i / 2i
-5 + i (2i) / 2i (2i)
-10i + i^2
i^2 - 10i
Convert them into the same form. 1/5 is equal to 2/10, or .2. .21 is clearly slightly bigger than .2
Answer:
- 1 - 23i
Step-by-step explanation:
The expression is
(3+i)-(5-7i)(-2+2i)
The answer to your question can be found in the image attached below.
We need to multiply the terms and add them together
(3+i) - [ (5)(-2+2i) +(-7i)(-2+2i) ]
= (3+i) - [ -10 +10i + 14i -14i^2]
= (3+i) - [ -10 +10i + 14i +(14)]
= (3+i) - [ 4 + 24i ]
= (3+i) - 4 - 24i
= - 1 - 23i