Question

How do you write the quadratic function `y=x^2-4x+15` in vertex form?

Answer 1

`y=(x-2)^2+11`

Explanation:

The vertex form of a quadratic is defined as `y=a(x-h)^2+k`.
To find h, you can use Completing the Square method:
`y=x^2-4x+4+11`
`y=(x-2)^2+11`