Question
Answer
$$(xy-2)(x\cdot2+1)=2x^2y+xy-4x-2$$
Explanation
| $$ \begin{aligned}(xy-2)(x\cdot2+1)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}2x^2y+xy-4x-2\end{aligned} $$ | |
| ① | Multiply each term of $ \left( \color{blue}{xy-2}\right) $ by each term in $ \left( 2x+1\right) $. $$ \left( \color{blue}{xy-2}\right) \cdot \left( 2x+1\right) = 2x^2y+xy-4x-2 $$ |
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