| $$ \begin{aligned}(-3bc^2)^5& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-243b^5c^{10}\end{aligned} $$ | |
| ① | $$ \left( -3bc^2 \right)^5 = (-3)^5b^5 \left( c^2 \right)^5 = -243b^5c^{10} $$ |