1) $x\left ( \frac{x+1}{x-1} \right )\left ( x+\frac{x+1}{x-1} \right )=6$.
2) $\sqrt{x}\left ( \frac{1-\sqrt{x}}{\sqrt{x}+1} \right )\left ( \sqrt{x} +\frac{1-\sqrt{x}}{\sqrt{x}+1}\right )= -2$.
Edited by L Lawliet, 04-09-2012 - 21:10.
Edited by L Lawliet, 04-09-2012 - 21:10.
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