$$ \begin{aligned}(4ab^4)^3(ab)^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}64a^3b^{12}1a^2b^2 \xlongequal{ } \\[1 em] & \xlongequal{ }64a^5b^{14}\end{aligned} $$ | |
① | $$ \left( 4ab^4 \right)^3 = 4^3a^3 \left( b^4 \right)^3 = 64a^3b^{12} $$$$ \left( ab \right)^2 = 1^2a^2b^2 = a^2b^2 $$ |