2.3 i think let me know if it works
Answer:
positive to zero because its above the zero
Step-by-step explanation:
Answer:
B. x= 4
Step-by-step explanation:
We know that,
The result for the intersection of the secant and the tangent is given by by the figure below,

According to the question, we have,

i.e. 
i.e. 
Now, the solution of a quadratic equation
is given by, 
So, we get,
implies a= 1, b= 12 and c= -64.
Thus, the solution is given by,

i.e. 
i.e. 
i.e. 
i.e.
and i.e. 
i.e.
and i.e. 
i.e x= -16 and x= 4.
Since, length cannot be negative.
So, we have, x= 4.
Yes it is possible to write an equation for such a parabola in the form