Question

3. Write y = x2 - 4x - 1 in vertex form.

Answer 1

`y = (x-2)^2 - 5`

Explanation:

Hi there!

`y = x^2 - 4x - 1`

First, complete the square:

`y = (x^2 - 4x) - 1\\y = (x^2 - 4x+4) - 1-4\\y = (x-2)^2 - 1-4`

Simplify:

`y = (x-2)^2 - 5`

I hope this helps!