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

Question

Responses

−21i
negative 21 i

21i
21 i

11i
11 i

−21

Answer 1

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

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

So, the result is:

\(-21i\)

The correct response is:

−21i