N
ngocdangyeu_2001


(3[TEX]\sqrt3 - 3[TEX]\sqrt2 + 2[TEX]\sqrt}6): 3[TEX]\sqrt3
[TEX]\sqrt0.4 + [TEX]\sqrt2,5
[TEX]\sqrt{4-[TEX]\sqrt7} - [TEX]\sqrt{4+[TEX]\sqrt7}[/TEX]
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