Question

-3x²+6x+9 qual o vértice da parabola?

Answer 1

Boa noite

-3x² + 6x + 9 = 0

a = -3
b = 6
c = 9

delta
d² = 36 + 108 = 144 

vértice

Vx = -b/2a = -6/-6 = 1
Vy = -d²/4a = -144/-12 = 12 

V(1, 12)