Respuesta :

Answer:

vertex: (3 , -1)

Step-by-step explanation:

x²−6x+8 = (x²−6x+9) -9 +8 = (x-3)² - 1

equation: f(x) =a (x - h)² + k    (h,k) is vertex

f(x) = (x-3)² - 1

vertex: (3 , -1)