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Mathematics 9 Online
OpenStudy (anonymous):

Simplify the radical expression by rationalizing the denominator.

OpenStudy (anonymous):

\[5 \over \sqrt{21}\]

OpenStudy (anonymous):

sorry, it's 4 over square root of 21

OpenStudy (anonymous):

multiply top and bottom by \[\sqrt{21}\]

OpenStudy (akshay_budhkar):

ok multiply on the numerator and denominator by \[\sqrt{21}\]

OpenStudy (akshay_budhkar):

ok u were faster satellite :P

OpenStudy (anonymous):

both get metals. thanks.

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