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13 October, 08:58

X^2+4x-11 in vertex form by completing the square

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Answers (2)
  1. 13 October, 10:21
    0
    X ^2 - 4x + 4 = 11 + 4

    (x - 2) ² = 15

    x - 2 = ±√15

    x = 2 ±√15

    I hope this is right or at least close ...; )
  2. 13 October, 10:26
    0
    Use the coefficient of x, divide it by two and square it.

    4/2=2

    x^2+4x + (4-15)

    (x+2) ^-15

    vertex is (-2,-15)
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