Question

f(x) = x² + 2x +5 determine as coordenadas do vértice da parábola.

Answer 1

f(x)=x²+2x+5=ax²+bx+c   ==>a=1,b=2 e c=5

Vértice=(vx,vy)

vx=-b/2a=2/2=1

vy=-Δ/4a=-[b²-4*a*c]/4a=-[4-20]/4=16/4=4