Respostas

2013-10-05T16:29:59-03:00
Xv = -b/2a = 1

Yv = -delta/4a =4
2013-10-05T16:32:52-03:00

Xv= \frac{-b}{2a}
Xv \frac{-(-2)}{2.1}
Xv= \frac{2}{2}
Xv=1
Yv= \frac{- delta}{2a}
Yv= \frac{-(-8)}{2.1}
Yv= \frac{8}{2}
YV=4
2 3 2