How to find the maximum value in vertex form

- How to find the maximum or minimum value in vertex form
- How to find the maximum value of a function in vertex form
- How to find the maximum value of a quadratic function in vertex form
- How to find the minimum or maximum value of a function in vertex form
- How to find vertex form
- How to find a maximum value of a function
- How to find vertex of parabola
- How to find coordinates of vertex