Answer
$$10x^2-\frac{20}{4}x^2-10x=5x^2-10x$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}10x^2-\frac{20}{4}x^2-10x& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}(10-\frac{20}{4})x^2-10x \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}5x^2-10x\end{aligned} $$ | |
| ① | Use the distributive property. |
| ② | Combine like terms |
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Simplify Rational Expressions