Question
Answer
$$7d^2+7+5d+3=7d^2+5d+10$$
Explanation
| $$ \begin{aligned}7d^2+7+5d+3& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}7d^2+5d+10\end{aligned} $$ | |
| ① | Combine like terms: $$ 7d^2+ \color{blue}{7} +5d+ \color{blue}{3} = 7d^2+5d+ \color{blue}{10} $$ |
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