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Mathematics
Raine
15 February, 19:17
X3-4x-7x+28=0 find the solution
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Biablo
15 February, 22:28
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Hi Teresa
x^3 - 4x - 7x + 28 = 0
x^3 - 11x + 28 = 0
Now we just need to use the cubic formula (Do you know the formula)
X = - 4.20267
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