Respostas

2013-09-05T20:58:05-03:00
Valor minimo = xvértice = -b/2a = -2/2 = -1
valor máximo = yvértice = - delta/ 4a = 16/4 = 4
obs: delta = b² - 4ac
delta= 4 - 4(1)(-3)
delta = 4 + 12
delta = 16
1 3 1