Question
Answer
$$\dfrac{25x^2-36}{10x+12}=\dfrac{5x-6}{2}$$
Explanation
| $$ \begin{aligned}\frac{25x^2-36}{10x+12}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{5x-6}{2}\end{aligned} $$ | |
| ① | Simplify $ \dfrac{25x^2-36}{10x+12} $ to $ \dfrac{5x-6}{2} $. Factor both the denominator and the numerator, then cancel the common factor. $\color{blue}{5x+6}$. $$ \begin{aligned} \frac{25x^2-36}{10x+12} & =\frac{ \left( 5x-6 \right) \cdot \color{blue}{ \left( 5x+6 \right) }}{ 2 \cdot \color{blue}{ \left( 5x+6 \right) }} = \\[1ex] &= \frac{5x-6}{2} \end{aligned} $$ |
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