Question 316530
{{{(sqrt(u)-sqrt(v))/(sqrt(u)+sqrt(v))=(sqrt(u)-sqrt(v))/(sqrt(u)+sqrt(v))*(sqrt(u)-sqrt(v))/(sqrt(u)-sqrt(v))}}}
{{{(sqrt(u)-sqrt(v))/(sqrt(u)+sqrt(v))=(u-sqrt(uv)-sqrt(uv)+v)/(u-sqrt(uv)+sqrt(uv)-v)}}}
{{{(sqrt(u)-sqrt(v))/(sqrt(u)+sqrt(v))=(u-2sqrt(uv)+v)/(u-v)}}}