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Algebra

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Moderate

Rationalize a Denominator

ALGEBR-XBFJB4

Simplify the radical and write it in simplest radical form:

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

A

$\cfrac{3\sqrt{7}}{7}$

B

$\cfrac{3\sqrt{7}}{49}$

C

$\cfrac{\sqrt{3}}{7}$

D

$\cfrac{\sqrt{21}}{7}$