| $$ \begin{aligned}\frac{(8x^2)^5}{3}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{32768x^{10}}{3}\end{aligned} $$ | |
| ① | $$ \left( 8x^2 \right)^5 = 8^5 \left( x^2 \right)^5 = 32768x^{10} $$ |