atvatv
atvatv atvatv
  • 21-04-2019
  • Mathematics
contestada

the quadratic formula and the discriminant. solve for x. 3x^2-6x+2=0

Respuesta :

altavistard
altavistard altavistard
  • 21-04-2019

Answer:

x = 6 + 2√3 and x = 6 - 2√3

Step-by-step explanation:

3x^2-6x+2=0 is a quadratic equation, for which a = 3, b = -6 and c = 2.

The discriminant is b² - 4ac, which here is   (-6)² - 4(3)(2) = 36 - 24 = 12.

Because the discriminant is positive, this quadratic has two different, real roots.

They are:

      -(-6) ± √12           6 ± 2√3

x = ------------------  =  ---------------  or

          2(3)                       6

x = 6 + 2√3 and x = 6 - 2√3

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