$$ \begin{aligned}-2a(-b^2c)^3& \xlongequal{ }-2a-b^6c^3 \xlongequal{ } \\[1 em] & \xlongequal{ }--2ab^6c^3 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}2ab^6c^3\end{aligned} $$ | |
① | Remove the parentheses by changing the sign of each term within them. $$ - \left(-2ab^6c^3 \right) = 2ab^6c^3 $$ |