# How do you rationalize the denominator and simplify (sqrt5-sqrt3)/(sqrt5+sqrt3)?

$\frac{\sqrt{5} - \sqrt{3}}{\sqrt{5} + \sqrt{3}} \times \frac{\sqrt{5} - \sqrt{3}}{\sqrt{5} - \sqrt{3}} \text{ "=" "(5+3-2sqrt15)/(5-3)" } = 4 - \sqrt{15}$