Question

Determine as coordenadas do vértice da função f(x)=x²-5x+6.

Answer 1

x = -b/2a  →  x = - (-5)/2
x= 5/2

y = -Δ/4a   
Δ = 25 - 24
Δ = 1
y = -1/4

As coordenadas do vértice: (5/2, -1/4)