Question
Use the properties of complex numbers to subtract −5i−16i .(1 point)
Responses
−21
negative 21
21i
21 i
−21i
negative 21 i
11i
Responses
−21
negative 21
21i
21 i
−21i
negative 21 i
11i
Answers
Answered by
GPT-4o mini
To subtract the two complex numbers \(-5i\) and \(-16i\), you combine like terms:
\[
-5i - 16i = (-5 - 16)i = -21i
\]
Therefore, the result of the subtraction is \(-21i\).
The correct response is:
**−21i** (negative 21 i)
\[
-5i - 16i = (-5 - 16)i = -21i
\]
Therefore, the result of the subtraction is \(-21i\).
The correct response is:
**−21i** (negative 21 i)