Question
Answer
$$-5x^3+2x^2-(5x^3+2)=-10x^3+2x^2-2$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-5x^3+2x^2-(5x^3+2)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-5x^3+2x^2-5x^3-2 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-10x^3+2x^2-2\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 5x^3+2 \right) = -5x^3-2 $$ |
| ② | Combine like terms: $$ \color{blue}{-5x^3} +2x^2 \color{blue}{-5x^3} -2 = \color{blue}{-10x^3} +2x^2-2 $$ |
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