Question

How do you write `y= 4x^2 + 16x + 23` into vertex form?

Answer 1

`(-b/2a) = -16/8 = -2`

`f(-b/2a) = f(-2) = 16 - 32 + 23 = 7`

Factored form:`f(x) = 4(x + 2)^2 + 7`

Check:
Develop: `f(x) = 4(x^2 + 4x + 4) + 7 = 4x^2 + 16x + 23.`Correct