Respuesta :

tramserran

 x² + 2x + 3 = 0

a=1, b=2, c=3

x = [tex]\frac{-b}{2a} = \frac{-2}{2(1)} = \frac{-2}{2} = -1[/tex]

f(-1) = (-1)² + 2(-1) + 3

      = 1 - 2 + 3

      = 4 - 2

      = 2

Answer: vertex = (-1, 2)