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OpenStudy (anonymous):
Simplify the radical expression by rationalizing the denominator.
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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
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OpenStudy (anonymous):
both get metals. thanks.
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