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06-10-2013 - 21:07
tìm các nghiệm nguyên phương trình
$\frac{11x}{5}-\sqrt{2x+1}= 3y-\sqrt{4y-1}+2$
25-08-2013 - 20:08
trục căn thức ở mẫu
$$\frac{1}{1+\sqrt[3]{2}+ \sqrt[3]{3}}$$
25-08-2013 - 20:00