Question
Answer
$$4u\cdot2v-12uv\cdot218uv=-2616u^2v^2+8uv$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}4u\cdot2v-12uv\cdot218uv& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}8uv-2616u^2v^2 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}-2616u^2v^2+8uv\end{aligned} $$ | |
| ① | $$ 4 u \cdot 2 v = 8 u v $$ |
| ② | $$ 12 u v \cdot 218 u v = 2616 u^{1 + 1} v^{1 + 1} = 2616 u^2 v^2 $$ |
| ③ | Combine like terms: $$ -2616u^2v^2+8uv = -2616u^2v^2+8uv $$ |
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