Answer
The sum is $3 - i$.
See Graph I, the resultant $3 - i$ is in RED.
Work Step by Step
The sum of $4 - 3i$ and $-1 + 2i$ is $3 - i$.
Refer to Graph I, the complex number, $4 - 3i$ and $-1 + 2i$ are in BLUE, while the resultant $3 - i$ is in RED.
