Answer:
The minimum value of the function is 5.6.
Explanation:
Vertex of a quadratic function:
Suppose we have a quadratic function in the following format:
It's vertex is the point
In which
Where
If a<0, the vertex is a maximum point, that is, the maximum value happens at
, and it's value is
.
If a > 0, then
is the minimum value of the function.
In this question:
We are given the following function:
Which is a quadratic function with
.
To find the minimum value, we have that:
The minimum value of the function is 5.6.