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