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