Answer
$$9x^3-3x^2+12-4=9x^3-3x^2+8$$
Explanation
| $$ \begin{aligned}9x^3-3x^2+12-4& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}9x^3-3x^2+8\end{aligned} $$ | |
| ① | Combine like terms: $$ 9x^3-3x^2+ \color{blue}{12} \color{blue}{-4} = 9x^3-3x^2+ \color{blue}{8} $$ |
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Simplify Rational Expressions