Question

How do you write `y=x^2+18x` in vertex form?

Answer 1

In Vertex form `y=(x+9)^2-81`

Explanation:

`y=x^2+18x=x^2+18x+81-81=(x+9)^2-81:.` vertex is at `(-9,-81)` graph{x^2+18x [-160, 160, -80, 80]}[Ans]