Tap the blue circles to see an explanation.
$$ \begin{aligned}\frac{\sqrt{12}}{\sqrt{25}}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{\sqrt{12}}{\sqrt{25}}\frac{\sqrt{25}}{\sqrt{25}} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}\frac{10\sqrt{3}}{25} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}\frac{ 10 \sqrt{ 3 } : \color{blue}{ 5 } } { 25 : \color{blue}{ 5 }} \xlongequal{ } \\[1 em] & \xlongequal{ }\frac{2\sqrt{3}}{5}\end{aligned} $$ | |
① | Multiply the numerator and denominator by the conjugate of the denominator . $$\color{blue}{ \sqrt{25}} $$. |
② | Multiply in a numerator. $$ \color{blue}{ \sqrt{12} } \cdot \sqrt{25} = 10 \sqrt{3} $$ Simplify denominator. $$ \color{blue}{ \sqrt{25} } \cdot \sqrt{25} = 25 $$ |
③ | Divide numerator and denominator by $ \color{blue}{ 5 } $. |