Question

Determine as coordenadas do vertice da parabola referente a funçao f(x)=x2 + 3x = 3

Answer 1

x² +3x=3

x² +3x-3=0

$Xv=- \frac{b}{2a} =- \frac{3}{2}$

Yv=-Δ/4a

Δ=b²-4ac
Δ=3³-4(-3)
Δ=9+12
Δ=21

$Yv=- \frac{21}{4}$

$V(- \frac{3}{2} ,- \frac{21}{4} )$