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15 February, 19:17

X3-4x-7x+28=0 find the solution

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  1. 15 February, 22:28
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    Hi Teresa

    x^3 - 4x - 7x + 28 = 0

    x^3 - 11x + 28 = 0

    Now we just need to use the cubic formula (Do you know the formula)

    X = - 4.20267
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