| $$ \begin{aligned}(-y^4z^3)^43x^2yz^3& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}y^{16}z^{12}3x^2yz^3 \xlongequal{ } \\[1 em] & \xlongequal{ }3x^2y^{17}z^{15}\end{aligned} $$ | |
| ① | $$ \left( -y^4z^3 \right)^4 = (-1)^4 \left( y^4 \right)^4 \left( z^3 \right)^4 = y^{16}z^{12} $$ |