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21 October, 13:15

Find a polynomial of degree 3 with a real coefficient that satisfies the given condition. Zeros: - 2, 1, 0; f (2) = 32

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  1. 21 October, 13:28
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    Its factors would be

    (x+2) * (x-1) * (x+0)

    x^2 + x - 2

    x^3 + 0 + x^2 + 0 - 2x + 0

    Equation: x^3 + x^2 - 2x

    f (2) = 8 + 4 - 4

    2x^3 + 2x^2 - 4x + 0

    f (2) = 16 + 8 - 8

    3x^3 + 3x^2 - 6x + 0

    f (2) = 24 + 12 - 12

    4x^3 + 4x^2 - 8x + 0

    f (2) = 32 + 16 - 16

    So, the equation is:

    4x^3 + 4x^2 - 8x = 0
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