• Matéria: Matemática
  • Autor: CamiloSilva1201
  • Perguntado 8 anos atrás

Alguém resolve essa equação do 2° Grau pra mim?

- x elevado a 2 + x + 12 = 0


Zahra67: this is brainly.com .right?

Respostas

respondido por: Juniortgod
1
a= -1
b= 1
c= 12

Δ= b²-4.a.c
Δ=1²-4.(-1).12
Δ=1+48
Δ= 49

x=  \frac{-1+- \sqrt{49} }{-2} =  \frac{-1+-7}{-2}

x¹=  \frac{-1+7}{-2}=  \frac{6}{-2} = -3

x²=  \frac{-1-7}{-2} =  \frac{-8}{-2} = 4

Resposta → S= {-3, 4}
Espero ter ajudado e bons estudos!

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