Ai làm được ý nào làm giúp mình nhé, mình cảm ơn ạ!!!
1) \sqrt{x+1} + \sqrt{x+10}= \sqrt{x+5} + \sqrt{x+2}
2) \sqrt{2x^2+16x+18} + \sqrt{x^2-1}= 2x+4
3) 7 \sqrt{4x^2+5x-1} - 14\sqrt{x^2-3x+3}= 17x-13
4) 8\sqrt{x^3+1)= 3(x^2-2x)
5) \sqrt{2x^2+5x+12} + \sqrt{2x^2+3x+2}= x+5
6) 20\sqrt{\frac{x-2}{x+1}} -5\sqrt{\frac{x+2}{x-1}}= 4\sqrt[4]{\frac{x^2-4}{x^2-1}}
7) \sqrt{x^2-2x+2012} + \sqrt{x^2-2x+2013} =\sqrt{4010}
8) \sqrt{x^2+x-1} + \sqrt{-x^2+x+1} = x^2-x+2
9) \frac{4x^2}{\sqrt{x^4+x}}= -x^2+4x-3