Tap the blue circles to see an explanation.
$$ \begin{aligned}\frac{3}{\sqrt{58}}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}} \frac{ 3 }{\sqrt{ 58 }} \times \frac{ \color{orangered}{\sqrt{ 58 }} }{ \color{orangered}{\sqrt{ 58 }}} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}\frac{3\sqrt{58}}{58}\end{aligned} $$ | |
① | Multiply both top and bottom by $ \color{orangered}{ \sqrt{ 58 }}$. |
② | In denominator we have $ \sqrt{ 58 } \cdot \sqrt{ 58 } = 58 $. |