Answer:
 -
 - 
 i
 i
Explanation:
Given

Rationalise the denominator by multiplying the numerator/ denominator by the conjugate of the denominator
The conjugate of 6 + 5i is 6 - 5i, thus
= 
 ← expand numerator / denominator using FOIL
 ← expand numerator / denominator using FOIL
= 
 → simplify using i² = - 1
 → simplify using i² = - 1
= 

= 
 
 
= 
 -
 - 
 i
 i