Question
Answer
$$-\sqrt{2}\cdot(-6+3\sqrt{2}\cdot1)=6\sqrt{2}-6$$
Explanation
| $$ \begin{aligned}-\sqrt{2}\cdot(-6+3\sqrt{2}\cdot1)& \xlongequal{ }-(-6\sqrt{2}+6) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}6\sqrt{2}-6\end{aligned} $$ | |
| ① | Remove the parenthesis by changing the sign of each term within them. |
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