Tap the blue circles to see an explanation.
$$ \begin{aligned}\sqrt{50}+9\sqrt{2}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}5\sqrt{2}+9\sqrt{2} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}14\sqrt{2}\end{aligned} $$ | |
① | $$ \sqrt{50} =
\sqrt{ 5 ^2 \cdot 2 } =
\sqrt{ 5 ^2 } \, \sqrt{ 2 } =
5 \sqrt{ 2 }$$ |
② | Combine like terms |