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SephI
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This is what I got so far\[\frac{ \sqrt{50} }{ 3\sqrt{15} } \rightarrow \frac{ 5\sqrt{2} }{ 3\sqrt{15} }\]
What do from here?

RaphaelFilgueiras
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multply by(sqrt(15)/sqrt(15))

SephI
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I did and I got \[\frac{5\sqrt{2} * \sqrt{15}}{3\sqrt15 * \sqrt{15}} \]

SephI
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Which is equal to:
\[\frac{5\sqrt{30}}{45} \]
But that's not a solution tht I'm given...

SephI
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@hba @robtobey

phi
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5/45= 1/9

SephI
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\[\frac{\sqrt{30}}{9} \]