$$ \begin{aligned}\frac{6x^3+2x^2-14x-10}{3x-5}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}2x^2+4x+2\end{aligned} $$ | |
① | Factor both the denominator and the numerator, then cancel the common factor. $\color{blue}{3x-5}$. $$ \begin{aligned} \frac{6x^3+2x^2-14x-10}{3x-5} & =\frac{ \left( 2x^2+4x+2 \right) \cdot \color{blue}{ \left( 3x-5 \right) }}{ 1 \cdot \color{blue}{ \left( 3x-5 \right) }} = \\[1ex] &= \frac{2x^2+4x+2}{1} =2x^2+4x+2 \end{aligned} $$ |