| $$ \begin{aligned}(-zx^4y^3)^3& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-x^{12}y^9z^3\end{aligned} $$ | |
| ① | $$ \left( -x^4y^3z \right)^3 = (-1)^3 \left( x^4 \right)^3 \left( y^3 \right)^3z^3 = -x^{12}y^9z^3 $$ |