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OpenStudy (anonymous):
rationalize the denominator problem in comment
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OpenStudy (anonymous):
\[3-\sqrt{5}/2+\sqrt{5}\]
OpenStudy (saifoo.khan):
\[\frac{3 - \sqrt5}{2+\sqrt5} \times \frac{2+\sqrt5}{2+\sqrt5}\]
OpenStudy (anonymous):
next step is
OpenStudy (saifoo.khan):
\[\frac{1+\sqrt5}{9+4\sqrt5}\] \[-11+5\sqrt5\]
OpenStudy (saifoo.khan):
that's the answer.
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OpenStudy (anonymous):
ty
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