Question

F(x)=x²-8x+16 coordenada do vértice

Answer 1

Coordenada do vértice : (xv,yv)
xv = -b/2a 
xv = -(-8)/2
xv = 8/2 = 4

yv = 4²-8(4)+16
yv = 16-32+16=32-32 = 0

(4,0)