Question
Answer
$$11x^3-4-(5x^2+3x-6)=11x^3-5x^2-3x+2$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}11x^3-4-(5x^2+3x-6)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}11x^3-4-5x^2-3x+6 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}11x^3-5x^2-3x+2\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 5x^2+3x-6 \right) = -5x^2-3x+6 $$ |
| ② | Combine like terms: $$ 11x^3 \color{blue}{-4} -5x^2-3x+ \color{blue}{6} = 11x^3-5x^2-3x+ \color{blue}{2} $$ |
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