Question

determine o vertice v da parabola que representa a funcao quadratica y:x²-6x+8?

Answer 1

a=1 b=-6 c= 8
Xv= -(-6)/2.1= 6/2
Xv= 3

∆= -6² - 4. 1. 8
∆= -36- 32
∆= -68

Yv= -(-68)/ 4.1= 68/4= 17
Yv=17