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3 October, 22:24

Which is the completely factored form of 12x3 - 60x2 + 4x - 20?

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  1. 3 October, 22:43
    0
    = 4 (3x^3 - 15x^2 + x - 5)

    product of first coefficient and - 5 is - 15 so one factor could be x + / 3) or x + / - 5)

    using the factor theorem f (5) = 375 - 375=5-5 = 0 so (x - 5) is a factor:-

    so we have 4 (x - 5) (3x^2 + 1) Answer
  2. 3 October, 22:45
    0
    Completely factored it is (12x^2 + 4) (x-5)
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