Question
Answer
$$2x^2+5x-(6x^2-2x)=-4x^2+7x$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}2x^2+5x-(6x^2-2x)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}2x^2+5x-6x^2+2x \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-4x^2+7x\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 6x^2-2x \right) = -6x^2+2x $$ |
| ② | Combine like terms: $$ \color{blue}{2x^2} + \color{red}{5x} \color{blue}{-6x^2} + \color{red}{2x} = \color{blue}{-4x^2} + \color{red}{7x} $$ |
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