# How do you simplify -sqrt(3/7)?

Sep 16, 2015

$- \frac{\sqrt{21}}{7}$

#### Explanation:

$- \sqrt{\frac{3}{7}}$

Simplify.

$- \frac{\sqrt{3}}{\sqrt{7}}$

Rationalize the denominator by multiplying the numerator and denominator times $\frac{\sqrt{7}}{\sqrt{7}}$.

$- \frac{\sqrt{3}}{\sqrt{7}} \times \frac{\sqrt{7}}{\sqrt{7}}$

Simplify.

$- \frac{\sqrt{3} \sqrt{7}}{7}$

Simplify.

$- \frac{\sqrt{21}}{7}$