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7 September, 10:40

X^2-x-1=0 quadratic formula

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Answers (1)
  1. 7 September, 11:23
    0
    X² - x - 1 = 0

    x = - (-1) + / - √ ((-1) ² - 4 (1) (-1))

    2 (1)

    x = 1 + / - √ (1 + 4)

    2

    x = 1 + / - √ (5)

    2

    x = 0.5 + 0.5√ (5)

    x = 0.5 + 0.5√ (5) x = 0.5 - 0.5√ (5)
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