Question
Answer
$$6-6x^3-(8x^3+5)=-14x^3+1$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}6-6x^3-(8x^3+5)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}6-6x^3-8x^3-5 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-14x^3+1\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 8x^3+5 \right) = -8x^3-5 $$ |
| ② | Combine like terms: $$ \color{blue}{6} \color{red}{-6x^3} \color{red}{-8x^3} \color{blue}{-5} = \color{red}{-14x^3} + \color{blue}{1} $$ |
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