Сократите дробь \(\frac{x-y}{x^{\frac{1}{2}}+y^{\frac{1}{2}}}\)

• \(\sqrt{x}-\sqrt{y}\)
• \(\frac{x+y}{x-y}\)
• \(\frac{1}{2}\)
• \(\frac{\sqrt{x}-\sqrt{y}}{2}\)