Tap the blue circles to see an explanation.
$$ \begin{aligned}\frac{12\sqrt{60}}{3\sqrt{5}}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{12\sqrt{60}}{3\sqrt{5}}\frac{\sqrt{5}}{\sqrt{5}} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}\frac{120\sqrt{3}}{15} \xlongequal{ } \\[1 em] & \xlongequal{ }8\sqrt{3}\end{aligned} $$ | |
① | Multiply the numerator and denominator by the conjugate of the denominator . $$\color{blue}{ \sqrt{5}} $$. |
② | Multiply in a numerator. $$ \color{blue}{ 12 \sqrt{60} } \cdot \sqrt{5} = 120 \sqrt{3} $$ Simplify denominator. $$ \color{blue}{ 3 \sqrt{5} } \cdot \sqrt{5} = 15 $$ |