Answer:
The vertex of the parabola is (-4,-4).
Step-by-step explanation:
If a quadratic function is defined as
... (1)
Then the vertex of the function is

The given function is
.... (2)
From (1) and (2), we get a=1,b=8 and c=12.

Substitute x=-4 in the given equation.


Therefore the vertex of the parabola is (-4,-4).