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6 February, 16:43

Find the roots of the polynomial equation - x^3+5x^2 - 11x+55=0

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  1. 6 February, 17:03
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    x³ + 5x² - 11x + 55 = 0

    x² (x) + x² (5) - 11 (x) - 11 (5) = 0

    (x² (x + 5) - 11 (x + 5) = 0

    (x² - 11) (x + 5) = 0

    x² - 11 = 0 or x + 5 = 0

    + 11 + 11 - 5 - 5

    x² = 11 or x = - 5

    x = ±√ (11) or x = - 5

    THere are three roots in the polynomial equation.
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