Question

How do you find the sum of the complex number: (4 - 2i) + (12 + 7i)?

Answer 1

16 + 5i

Explanation:

To add/subtract complex numbers . Add/subtract the real terms together and add/subtract the imaginary terms together.

If a + bi and c+ di are 2 complex numbers then

a + bi + c + di = (a + c) + (b + d )i

here then : 4 - 2i + 12 + 7i = (4+12)+(-2 +7)i = 16 + 5i