3 years ago

Simplify the radical expression by rationalizing the denominator.

Mathematics

1 answer:

artcher [175]3 years ago

4 0

$\frac{4}{\sqrt{21}} = \frac{4}{\sqrt{21}} \times \frac{\sqrt{21}}{\sqrt{21}} =\boxed{ \frac{4\sqrt{21}}{21}}$

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$\red { \green {\boxed {\boxed{Answer}}}}$

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