Resposta :

crisley1
Xv = -b/2a = 1

Yv = -delta/4a =4

Xv=[tex] \frac{-b}{2a}[/tex]
Xv[tex] \frac{-(-2)}{2.1}[/tex]
Xv=[tex] \frac{2}{2}[/tex]
Xv=1
Yv=[tex] \frac{- delta}{2a}[/tex]
Yv=[tex] \frac{-(-8)}{2.1}[/tex]
Yv=[tex] \frac{8}{2}[/tex]
YV=4

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