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nguyenbahiep1

[laTEX]B.2006 = B.x = x^{11} - 2000x^{10} + 2000x^9 - ...+ 2000x \\ \\ Bx+B = 2007B = x^{11} - 1999x^{10} +2000 \\ \\ 2007B = x^{10}.(x-1999) + 2000 \\ \\ B = \frac{7x^{10}+2000}{2007} = \frac{7.2006^{10} + 2000}{2007}[/laTEX]
 
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