Question
Answer
$$\sqrt{\dfrac{7}{3}}=\dfrac{1}{3}\sqrt{21}$$
Explanation
| $$ \begin{aligned}\sqrt{\frac{7}{3}}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{1}{3}\sqrt{21}\end{aligned} $$ | |
| ① | $$ \sqrt{ \frac{ 7 }{ 3 } } = \frac{ \sqrt{ 7 } } {\sqrt{ 3 }}
= \frac{ \sqrt{ 7 } } {\sqrt{ 3 }} \cdot \frac{ \sqrt{ 3 } } {\sqrt{ 3 }} = \\
= \frac{ \sqrt{ 21 }} { 3 } = \frac{ 1 }{ 3 } \sqrt{ 21 } $$ |
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