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