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nhoxsoi_kute


a) [TEX]\left ( x+\frac{1}{3} \right )^{3}[/TEX]
b) [TEX]\left ( x-\frac{1}{3} \right )^{3}[/TEX]
thank nhiều
b) [TEX]\left ( x-\frac{1}{3} \right )^{3}[/TEX]
thank nhiều
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