Answer
$$\frac{\sqrt{9}}{\sqrt{75}}=\frac{\sqrt{3}}{5}$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}\frac{\sqrt{9}}{\sqrt{75}}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{\sqrt{9}}{\sqrt{75}}\frac{\sqrt{75}}{\sqrt{75}} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}\frac{15\sqrt{3}}{75} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}\frac{\sqrt{3}}{5}\end{aligned} $$ | |
| ① | Multiply the numerator and denominator by the conjugate of the denominator . $$\color{blue}{ \sqrt{75}} $$. |
| ② | Multiply in a numerator. $$ \color{blue}{ \sqrt{9} } \cdot \sqrt{75} = 15 \sqrt{3} $$ Simplify denominator. $$ \color{blue}{ \sqrt{75} } \cdot \sqrt{75} = 75 $$ |
| ③ | Divide both numerator and denominator by 15. |
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