Question
Answer
$$8x^3+6-(2x^3+4)=6x^3+2$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}8x^3+6-(2x^3+4)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}8x^3+6-2x^3-4 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}6x^3+2\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 2x^3+4 \right) = -2x^3-4 $$ |
| ② | Combine like terms: $$ \color{blue}{8x^3} + \color{red}{6} \color{blue}{-2x^3} \color{red}{-4} = \color{blue}{6x^3} + \color{red}{2} $$ |
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