Answer:
Solving the equation
by putting a=6, b=4 and d=1/2 we get 
Step-by-step explanation:
We are given formula: 
and values a=6, b=4 and d=1/2
We need to put the values of a, b and d in the given equation
and find their result
Putting values in the equation:

So, solving the equation
by putting a=6, b=4 and d=1/2 we get 