Question
Answer
$$12\sqrt{97}\sqrt{9}=36\sqrt{97}$$
Explanation
| $$ \begin{aligned}12\sqrt{97}\sqrt{9}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}36\sqrt{97}\end{aligned} $$ | |
| ① | $$ 12 \sqrt{873} =
12 \sqrt{ 3 ^2 \cdot 97 } =
12 \sqrt{ 3 ^2 } \, \sqrt{ 97 } =
12 \cdot 3 \sqrt{ 97 } =
36 \sqrt{ 97 } $$ |
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