(4+3i)-(2+i)

Compute term-by-term: (4+3i) - (2+i) = (4-2) + (3-1)i = 2 + 2i

So the result is 2 + 2i.

Optional: magnitude and argument

• |2+2i| = sqrt(2^2 + 2^2) = sqrt(8) = 2√2
• arg(2+2i) = arctan(2/2) = π/4 (45°) assuming principal value.