jadesparks935 jadesparks935
  • 24-09-2018
  • Mathematics
contestada

Encontre as raízes e os vértices das seguintes funções ; x2 +2x+3=0

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tramserran
tramserran tramserran
  • 24-09-2018

 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)

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