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Thiếu úy
giải phương trình
$8x^{2}-13x+7=(1+\frac{1}{x})\sqrt[3]{(x+1)(2x-1)+x^{2}-x-1}$
Binh nhất
giải phương trình $8x^{2}-13x+7=(1+\frac{1}{x})\sqrt[3]{(x+1)(2x-1)+x^{2}-x-1}$
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