Question
Answer
$$4x^3y(3y+1)=12x^3y^2+4x^3y$$
Explanation
| $$ \begin{aligned}4x^3y(3y+1)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}12x^3y^2+4x^3y\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{4x^3y} $ by $ \left( 3y+1\right) $ $$ \color{blue}{4x^3y} \cdot \left( 3y+1\right) = 12x^3y^2+4x^3y $$ |
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