Use the properties of complex numbers to subtract −5i−16i .(1 point) Responses −21i negative 21 i −21 negative 21 11i 11 i 21i
To subtract -5i - 16i, you simply combine the coefficients of the imaginary part.
-5i - 16i can be simplified to (-5 - 16)i, which gives us -21i.
Therefore, the correct response is:
-21i