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OpenStudy (anonymous):
Rationalize the denominator of 5/(9 + √5)
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OpenStudy (anonymous):
\[\frac{5}{9+\sqrt{5}}\times\frac{9-\sqrt{5}}{9-\sqrt{5}}=\frac{45-5\sqrt{5}}{81-9\sqrt{5}+9\sqrt{5}-5}=\frac{45-5\sqrt{5}}{76}\]
OpenStudy (anonymous):
put 6x3/4 in radical form
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