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2 August, 14:24

Write a cubic function with zeros of - 3, - 5 and 2

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  1. 2 August, 17:58
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    For zeroes of r1, r2, r3, the factors of the function, f (x) are

    (x-r1) (x-r2) (x-r3)

    zeroes of - 3,-5,2

    (x - (-3)) (x - (-5)) (x-2) =

    (x+3) (x+5) (x-2)

    f (x) = (x+3) (x+5) (x-2)

    expanded

    f (x) = x³+6x²-x-30
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