Question

A)y=x²+4x-2 formula de baskara e determina a vertice da parabola

Answer 1

xv = -b/2a
xv = -4/2.1
xv = -4/2
xv = -2

yv = -delta/4a
delta = 4² - 4.1.(-2)
delta = 16+8
delta = 24
yv = -24/4
yv = -6

V = (-2, -6)

Answer 2

a=1 b= 4 c=-2
∧=b²-4.a.c
∧=4²-4.1.(-2)
∧=16+8
∧=24
∉