Question

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

Answer 1

Answer:

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

Step-by-step 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!