Question
Answer
$$-9+x-8x^2+2x^2+11x^3+6x^2+9=11x^3+x$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-9+x-8x^2+2x^2+11x^3+6x^2+9& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-6x^2+x-9+11x^3+6x^2+9 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}11x^3+x\end{aligned} $$ | |
| ① | Combine like terms: $$ -9+x \color{blue}{-8x^2} + \color{blue}{2x^2} = \color{blue}{-6x^2} +x-9 $$ |
| ② | Combine like terms: $$ \, \color{blue}{ -\cancel{6x^2}} \,+x \, \color{green}{ -\cancel{9}} \,+11x^3+ \, \color{blue}{ \cancel{6x^2}} \,+ \, \color{green}{ \cancel{9}} \, = 11x^3+x $$ |
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