Question

qual e o vertice da parabola y= 2x²-4x+5

Answer 1

Faremos:

xv = -b/2a
xv = 4/2*2
xv = 1

yv = 2*1² -4*1 +5
yv = 2 -4 +5
yv = +3


vértice ( 1, 3 )