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24 January, 07:12

For what values of k does kx^ (2) - 3x+2=0 have two equal real roots?

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Answers (2)
  1. 24 January, 08:01
    0
    Step-by-step explanation:

    Therefore discriminant = b^2-4ac = 0

    b=-k, a=3, c=2

    b^2-4ac = (-k) ^2-4*3*2=0

    k^2-24=0

    k^2=24

    k = + / - 2sqrt (6)
  2. 24 January, 09:49
    0
    Tienes que usar la fórmula cuadrática:

    (-b + / - √ (b^2-4ac)) / 2a

    Primero identificas los valores de a, b y c en kx^2-3x+2=0

    K=a, b=-3, c=2

    Luego sustituis en la fórmula y te queda:

    (3+/-√ (9-8k)) / 2k

    Para que las raíces Sena reales se tienen que cumplir que 9-8k>=0
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