Tìm x;y, \[ \left| 2\sqrt{x+2} + |y-1| \right| = 11 \]

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1) \[ \left| 2\sqrt{x+2} + |y-1| \right| = 11 \]
\[ \sqrt{x+2} + 2|y-1| = 10 \]
2) \[ \frac{8}{\sqrt{x-3}} + \frac{1}{|2y-1|} = 5 \]
3) \[ \left| 2|x-1| + \frac{3}{\sqrt{y+2}} \right| = 5 \]
\[ \left| x-1 \right| - \frac{1}{\sqrt{y+2}} = \frac{5}{3} \]
4) \[ \frac{2}{|x-2|} + \frac{1}{y} = 2 \]
\[ \frac{6}{|x-2|} - \frac{2}{y} = 1 \]