Question

What is the the vertex of `y = x^2 - 2x - 16`?

Answer 1

minimum at `-17`

Explanation:

`y = x^2 - 2 x -1 6`

by using completing a square,

`y = (x - 1)^2 - (-1)^2 -1 6`

`y = (x - 1)^2 -17`

vertex is minimum at `-17`