Question 601470
Determine the vertex of the parabola. 
f(x) = x2 - 8x + 17
Complete the square
y = (x2 - 8x+16)+17-16
y = (x-4)^2+1
This is an equation of a parabola that opens upwards.
Its standard form: y=(x-h)^2+k (h,k)=(x,y) coordinates of the vertex
For given equation:y = (x-4)^2+1
vertex: (4,1)