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) $$\frac{2}{|x-2|} + \frac{1}{y} = 2$$
$$\frac{6}{|x-2|} - \frac{2}{y} = 1$$