goatjohnathan
goatjohnathan goatjohnathan
  • 16-04-2020
  • Mathematics
contestada

Which equation is true for x = –6 and x = 2?

A.2x^2 – 16x + 12 = 0
B.2x^2 + 8x – 24 = 0
C.3x^2 – 4x – 12 = 0
D.3x^2 + 12x + 36 = 0

Respuesta :

bayosanuade
bayosanuade bayosanuade
  • 16-04-2020

Answer: [tex]x^{2} +4x - 12 = 0[/tex]

Step-by-step explanation:

To find the quadratic equation when the roots are given , we will use the formula:

[tex]x^{2} -[/tex] sum of roots[tex](x)[/tex] + product of roots = 0

sum of roots = -6 + 2 = -4

product of roots = -6(2) = -12

substituting into the formula, we have

[tex]x^{2} - (-4) +(-12) = 0[/tex]

[tex]x^{2} +4x - 12 = 0[/tex]

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