Answer:
C. 3x + 8
Step-by-step explanation:
We have the quadratic expression
.
Equating the expression to 0, we get the equation,
.
Now, we know the solution of the quadratic equation
is given by 
As, we have,
a= 12, b= 29 and c= -8.
The solution is given by,

i.e. 
i.e. 
i.e. 
i.e.
and 
i.e.
and 
i.e.
and 
So, the factors of the expression
are (4x-1) and (3x+8).
Thus, according to the options, the expression which is factor of the given equation is 3x + 8.