Question
Answer
$$\sqrt{18}+\sqrt{2}+\sqrt{2}\cdot0+\sqrt{2}=0$$
Explanation
| $$ \begin{aligned}\sqrt{18}+\sqrt{2}+\sqrt{2}\cdot0+\sqrt{2}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}0\end{aligned} $$ | |
| ① | $$ \sqrt{18} =
\sqrt{ 3 ^2 \cdot 2 } =
\sqrt{ 3 ^2 } \, \sqrt{ 2 } =
3 \sqrt{ 2 }$$ |
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