Answer
$$1+2x-(6x+2-5x^4)=5x^4-4x-1$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}1+2x-(6x+2-5x^4)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}1+2x-6x-2+5x^4 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}5x^4-4x-1\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 6x+2-5x^4 \right) = -6x-2+5x^4 $$ |
| ② | Combine like terms: $$ \color{blue}{1} + \color{red}{2x} \color{red}{-6x} \color{blue}{-2} +5x^4 = 5x^4 \color{red}{-4x} \color{blue}{-1} $$ |
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