Answer:
4+i
Step-by-step explanation:
13-i
-----------
3-i
Multiply by the complex conjugate on the top and bottom
3+i
------
3+i
13-i 3+i
----------- * ----------
3-i 3+i
FOIL
13*3 +13i -3i - i^2
-------------------------
3*3 +3i -3i -i^2
39 +10i - -1
-------------------------
9 +1
40 +10i
-------------
10
Divide the top and bottom by 10
4 + i
