The additive identity of any number, including complex numbers, is the number that, when added to it, leaves the original number unchanged. For complex numbers, the additive identity is 0.
In this case, we are looking at the complex number 14 + 5i. When we add the additive identity, which is 0 (or 0 + 0i in complex form), to 14 + 5i, we have:
(14 + 5i) + (0 + 0i) = 14 + 5i.
This shows that adding 0 does not change the value of our original complex number. Therefore, the additive identity of the complex number 14 + 5i is 0.