Question

Question #fb6c4

Answer 1

The vertex is at `(-5,-16)`

Explanation:

`x^2 +10x +9`

`= x^2 +10x +25 +9-25" "+-b^2/2`

`= (x +5)^2 -16`

This is in the form `(x+b)^2 +c`

The vertex is at `(-5,-16)`