Question
Answer
$$\dfrac{2\sqrt{10}}{\sqrt{41}}=\dfrac{2\sqrt{410}}{41}$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}\frac{2\sqrt{10}}{\sqrt{41}}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{2\sqrt{10}}{\sqrt{41}}\frac{\sqrt{41}}{\sqrt{41}} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}\frac{2\sqrt{410}}{41}\end{aligned} $$ | |
| ① | Multiply the numerator and denominator by the conjugate of the denominator . $$\color{blue}{ \sqrt{41}} $$. |
| ② | Multiply in a numerator. $$ \color{blue}{ 2 \sqrt{10} } \cdot \sqrt{41} = 2 \sqrt{410} $$ Simplify denominator. $$ \color{blue}{ \sqrt{41} } \cdot \sqrt{41} = 41 $$ |
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