Question
Answer
$$\dfrac{20}{5\sqrt{2}}=2\sqrt{2}$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}\frac{20}{5\sqrt{2}}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{20}{5\sqrt{2}}\frac{\sqrt{2}}{\sqrt{2}} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}\frac{20\sqrt{2}}{10} \xlongequal{ } \\[1 em] & \xlongequal{ }2\sqrt{2}\end{aligned} $$ | |
| ① | Multiply the numerator and denominator by the conjugate of the denominator . $$\color{blue}{ \sqrt{2}} $$. |
| ② | Multiply in a numerator. $$ \color{blue}{ 20 } \cdot \sqrt{2} = 20 \sqrt{2} $$ Simplify denominator. $$ \color{blue}{ 5 \sqrt{2} } \cdot \sqrt{2} = 10 $$ |
This page was created using
Rationalize Denominator Calculator