Question
Answer
$$\sqrt{45}\cdot\sqrt{5}=15$$
Explanation
| $$ \begin{aligned}\sqrt{45}\cdot\sqrt{5}& \xlongequal{ }\sqrt{225} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}15\end{aligned} $$ | |
| ① | The square root of $ 225 $ is $ 15 $. |
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