How to find vertex of parabola without x intercepts

- How to find vertex of parabola with x intercepts
- How to find the vertex of a parabola without x intercepts
- How to find vertex of a parabola with 2 x intercepts
- How to find vertex of parabola
- How to find vertex of parabola in standard form
- How to find vertex of quadratic function
- How to find vertex form