Answer:
Sum is 13 +3i .
Step-by-step explanation:
Given :15 – 6i and –2 + 9i
To find :What is the sum
Solution : We have given 15 – 6i and –2 + 9i
On adding the terms
15 – 6i + (–2 + 9i)
15 – 6i –2 + 9i
On combine real part and complex part.
15 -2 - 6i + 9i.
13 +3i
Therefore, Sum is 13 +3i .
