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[Tulitran]

1. $\sqrt{3x^{2}-7x+3}-\sqrt{x^{2}-2}=\sqrt{3x^{2}-5x-1}-\sqrt{x^{2}-3x+4}$

 

2. $\sqrt{4x^{2}+x+6}=4x-2+7\sqrt{x+1}$

 

3.$(4x^{2}-x-7)\sqrt{x+2}>10+4x-8x^{2}$

 

4.$\sqrt{1-2x}+\sqrt{1+2x}\geqslant 2-x^{3}$

 

5.$x+1+\sqrt{x^{2}-4x+1}\geqslant 3\sqrt{x}$

 

6.$\sqrt{x-1}+\sqrt[3]{x+6}=\sqrt[4]{x+79}$

Giúp mình nhé

Edited by Tulitran, 29-08-2013 - 17:32.