Question
Answer
$$-4\sqrt{15}\sqrt{5}=-20\sqrt{3}$$
Explanation
| $$ \begin{aligned}-4\sqrt{15}\sqrt{5}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-20\sqrt{3}\end{aligned} $$ | |
| ① | $$ - 4 \sqrt{75} =
-4 \sqrt{ 5 ^2 \cdot 3 } =
-4 \sqrt{ 5 ^2 } \, \sqrt{ 3 } =
-4 \cdot 5 \sqrt{ 3 } =
-20 \sqrt{ 3 } $$ |
This page was created using
Simplify Radical Expression