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Tính [TEX]P = \frac{2^3 - 1}{2^3 + 1}.\frac{3^3 - 1}{3^3 + 1}.\frac{4^3 - 1}{4^3 + 1}\cdots\frac{2013^3 - 1}{2013^3 + 1}.\frac{2014^3 - 1}{2014^3 + 1}[/TEX]
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