Question
Answer
$$2\sqrt{50}-8\sqrt{2}=2\sqrt{2}$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}2\sqrt{50}-8\sqrt{2}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}10\sqrt{2}-8\sqrt{2} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}2\sqrt{2}\end{aligned} $$ | |
| ① | $$ 2 \sqrt{50} =
2 \sqrt{ 5 ^2 \cdot 2 } =
2 \sqrt{ 5 ^2 } \, \sqrt{ 2 } =
2 \cdot 5 \sqrt{ 2 } =
10 \sqrt{ 2 } $$ |
| ② | Combine like terms |
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