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1 vote
Simply
√(3) * √(21)please help

1 Answer

1 vote

We have


\sqrt[]{3}*\sqrt[]{21}

we can reduce the expression


\begin{gathered} \sqrt[]{3}*\sqrt[]{21} \\ \sqrt[]{3}*\sqrt[]{3*7} \\ \sqrt[]{3}*\sqrt[]{3}*\sqrt[]{7} \\ 3\sqrt[]{7} \end{gathered}

the solution is


3\sqrt[]{7}

User Claas Wilke
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