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3 July, 19:15

For solving equations by completing the square, how do you solve X2 - 4X + 12 = 0?

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Answers (1)
  1. 3 July, 21:03
    0
    X² - 4x + 12 = 0

    x = - (-4) / - √ ((-4) ² - 4 (1) (12))

    2 (1)

    x = 4 + / - √ (16 - 48)

    2

    x = 4 + / - √ (-32)

    2

    x = 4 + / - 4i√ (2)

    2

    x = 2 + 2i√ (2)

    x = 2 + 2i√ (2) x = 2 - 2i√ (2)

    The solution the problem is {2 + 2i√ (2), 2 - 2i√ (2) }.
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