Question
Answer
$$-\sqrt{14}\cdot(-8+\sqrt{6})=8\sqrt{14}-2\sqrt{21}$$
Explanation
| $$ \begin{aligned}-\sqrt{14}\cdot(-8+\sqrt{6})& \xlongequal{ }-(-8\sqrt{14}+2\sqrt{21}) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}8\sqrt{14}-2\sqrt{21}\end{aligned} $$ | |
| ① | Remove the parenthesis by changing the sign of each term within them. |
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