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24 January, 18:06

What polynomial has roots of - 5, - 4, and 1?

x3 - 8x2 - 11x + 20

x3 - x2 + 22x + 40

x3 + x2 - 22x - 40

x3 + 8x2 + 11x - 20

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Answers (1)
  1. 24 January, 18:09
    0
    The last choice.

    Step-by-step explanation:

    The last term is - 20 and because we have a coefficient of 1 on the x^3, and in order to get this last term and the given roots the factors have to be

    (x + 5) (x + 4) (x - 1) so it is the last option.
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