Answer:
a sqrt(2) - sqrt(3) 
 ----------------------- + 2i
 2
Explanation:
(sqrt 2/2 +i) - (sqrt 3/2 -i)
Add the real terms
sqrt(2) / 2 - sqrt(3) /2 
sqrt(2) - sqrt(3) 
-----------------------
2
Now add the imaginary terms
i - -i
i+i
2i
Put them back together
sqrt(2) - sqrt(3) 
----------------------- + 2i
2