Rút gọn: $\left( \frac{2 + \sqrt{x}}{2 - \sqrt{x}} - \frac{4x}{x - 4} - \frac{2 - \sqrt{x}}{2 + \sqrt{x}} \right) : \frac{x - \sqrt{x}}{2\sqrt{x} - x}$

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Rút gọn:

$\left( \frac{2 + \sqrt{x}}{2 - \sqrt{x}} - \frac{4x}{x - 4} - \frac{2 - \sqrt{x}}{2 + \sqrt{x}} \right) : \frac{x - \sqrt{x}}{2\sqrt{x} - x}$

Rút gọn: (2+√x2−√x−4xx−4−2−√x2+√x):x−√x2√x−x \left( \frac{2 + \sqrt{x}}{2 - \sqrt{x}} - \frac{4x}{x - 4} - \frac{2 - \sqrt{x}}{2 + \sqrt{x}} \right) : \frac{x - \sqrt{x}}{2\sqrt{x} - x}