Question
Answer
$$\dfrac{23}{\sqrt{23}}=\sqrt{23}$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}\frac{23}{\sqrt{23}}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}} \frac{ 23 }{\sqrt{ 23 }} \times \frac{ \color{orangered}{\sqrt{ 23 }} }{ \color{orangered}{\sqrt{ 23 }}} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}\frac{23\sqrt{23}}{23} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}} \frac{ 23 \sqrt{ 23 } : \color{blue}{ 23 } }{ 23 : \color{blue}{ 23 } } \xlongequal{ } \\[1 em] & \xlongequal{ }\frac{\sqrt{23}}{1} \xlongequal{ } \\[1 em] & \xlongequal{ }\sqrt{23}\end{aligned} $$ | |
| ① | Multiply both top and bottom by $ \color{orangered}{ \sqrt{ 23 }}$. |
| ② | In denominator we have $ \sqrt{ 23 } \cdot \sqrt{ 23 } = 23 $. |
| ③ | Divide both the top and bottom numbers by $ \color{blue}{ 23 }$. |
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