| $$ \begin{aligned}2s^4(2s)^5& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}2s^4\cdot32s^5 \xlongequal{ } \\[1 em] & \xlongequal{ }64s^9\end{aligned} $$ | |
| ① | $$ \left( 2s \right)^5 = 2^5s^5 = 32s^5 $$ |