Question

Determine the vertex of the function f(x) = 2(x-4)^2+5

Answer 1

Answer: (4, 5)

Proof of validity is shown below.

Answer 2

(4,5)

Explanation:

The vertex is written in vertex form.

y = a(x - b)^2 + c

Vertex: (b,c) Notice the sign change on b.

So for your equation, you get (4,5) No sign change on the 5.