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15 September, 03:32

What are the possible values of x in - 11x^2 + 2x = 10?

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  1. 15 September, 03:45
    0
    -11x² + 2x = 10

    -11x² + 2x - 10 = 10 - 10

    -11x² + 2x - 10 = 0

    x = - (2) + / - √ ((2) ² - 4 (-11) (-10))

    2 (-11)

    x = - 2 + / - √ (4 - 440)

    -22

    x = - 2 + / - √ (-436)

    -22

    x = - 2 + / - 2i√ (109)

    -22

    x = - 2 + 2i√ (109) x = - 2 - 2i√ (109)

    -22 - 22

    x = ¹/₁₁ - ¹/₁₁i√ (109) x = ¹/₁₁ + ¹/₁₁i√ (109)
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