Practice problem
Remove the radical from the denominator by multiplying by the conjugate: x−yx+y\frac{x-y}{\sqrt{x}+\sqrt{y}}x+yx−y
x−y\sqrt{x}-\sqrt{y}x−y
x−yx+y\frac{\sqrt{x}-\sqrt{y}}{x+y}x+yx−y
x−yx−y\frac{\sqrt{x}-\sqrt{y}}{x-y}x−yx−y
x−yx-yx−y
Type a concept, like “slope” or “photosynthesis”.