adrianbarone adrianbarone

17-07-2017
Mathematics

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Find the zeros of the function. f(x) = 4x3 - 12x2 - 40x

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Аноним Аноним

17-07-2017

first take out the GCF which is 4x

4x (x^2 - 3x - 10) = 0

4x(x - 5)(x + 2) = 0

4x = 0 so x = 0

x - 5 = 0 so x = 5

x+2 = 0 so x = -2

zeros are -2, 0 and 5

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