Question
Answer
$$6\sqrt{12}-3\sqrt{4}=12\sqrt{3}-6$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}6\sqrt{12}-3\sqrt{4}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}12\sqrt{3}-6\end{aligned} $$ | |
| ① | $$ 6 \sqrt{12} =
6 \sqrt{ 2 ^2 \cdot 3 } =
6 \sqrt{ 2 ^2 } \, \sqrt{ 3 } =
6 \cdot 2 \sqrt{ 3 } =
12 \sqrt{ 3 } $$ |
| ② | $$ - 3 \sqrt{4} = -3 \cdot 2 = -6 $$ |
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