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OpenStudy (anonymous):
we have 3 root 75 minus root 243?
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OpenStudy (anonymous):
\[\sqrt[3]{75} - \sqrt{243} , is this the question?\]
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
or \[3 \sqrt{75} - \sqrt{243}\] ? which one ?
OpenStudy (anonymous):
\[3\sqrt{75} - \sqrt{243} = 3\sqrt{25}\sqrt{3} - \sqrt{81}\sqrt{3} = 15\sqrt{3}-9\sqrt{3} = 6\sqrt{3}\]
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