Question

coordenadas do vértice y=-x2-6x-8

Answer 1

-x²-6x-8=0
∆=b²-4ac
∆=(-6)²-4.(-1).(-8)
∆=36-32
∆=4
xv=-b/2a
xv=-(-6)/2.(-1)
xv=6/-2
xv=-3
yv=-∆/4a
yv=-4/4.(-1)
yv=-4/-4
yv=1
(-3, 1)