Answer
$$-(2x+3)^3=-8x^3-36x^2-54x-27$$
Explanation
| $$ \begin{aligned}-(2x+3)^3& \xlongequal{ }-(8x^3+36x^2+54x+27) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-8x^3-36x^2-54x-27\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left(8x^3+36x^2+54x+27 \right) = -8x^3-36x^2-54x-27 $$ |
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