Use the properties of complex numbers to subtract −5i−16i .(1 point)

Question

Responses

11i
11 i

−21
negative 21

21i
21 i

−21i
negative 21 i

Answer 1

To subtract the complex numbers \(-5i\) and \(-16i\), you can combine the imaginary parts:

\[ -5i - 16i = (-5 - 16)i = -21i \]

So the answer is:

\(-21i\)

The correct response is:

−21i