Answer
$$(6m+4n)^2=36m^2+48mn+16n^2$$
Explanation
| $$ \begin{aligned}(6m+4n)^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}36m^2+48mn+16n^2\end{aligned} $$ | |
| ① | Find $ \left(6m+4n\right)^2 $ using formula. $$ (A + B)^2 = \color{blue}{A^2} + 2 \cdot A \cdot B + \color{red}{B^2} $$where $ A = \color{blue}{ 6m } $ and $ B = \color{red}{ 4n }$. $$ \begin{aligned}\left(6m+4n\right)^2 = \color{blue}{\left( 6m \right)^2} +2 \cdot 6m \cdot 4n + \color{red}{\left( 4n \right)^2} = 36m^2+48mn+16n^2\end{aligned} $$ |
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