Question
Answer
$$12x^2+3x-4-(2x+11)=12x^2+x-15$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}12x^2+3x-4-(2x+11)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}12x^2+3x-4-2x-11 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}12x^2+x-15\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 2x+11 \right) = -2x-11 $$ |
| ② | Combine like terms: $$ 12x^2+ \color{blue}{3x} \color{red}{-4} \color{blue}{-2x} \color{red}{-11} = 12x^2+ \color{blue}{x} \color{red}{-15} $$ |
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