Question

What is the vertex form of `y=x^2+15x+36`?

Answer 1

`y=(x+15/2)^2-81/4`

Explanation:

`y=x^2+15x+36`
And then
`y=(x^2+15x+225/4)-81/4`
Final combine and make the pattern clear
`y=(x+15/2)^2-81/4`