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11 January, 02:53

Solve (algebraically by any method) 3x to the 2 power + 8x - 4 = 0

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Answers (1)
  1. 11 January, 03:01
    0
    3 x^{2} + 8x + (-4) = 0

    x = - b + √ b² - 4ac

    2a

    x = - 8 + √ 8² - 4 (3) (-4)

    2 (3)

    x = - 8 + √64 - 48

    6

    x = - 8 + √16

    6

    x = - 8 + 4 x = - 8 - 4

    6 6

    x = - 4 x = - 12

    6 6

    x = - 2 x = - 2

    3
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