Answer
$$(5m-2)(5m-2)=25m^2-20m+4$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}(5m-2)(5m-2)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}25m^2-10m-10m+4 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}25m^2-20m+4\end{aligned} $$ | |
| ① | Multiply each term of $ \left( \color{blue}{5m-2}\right) $ by each term in $ \left( 5m-2\right) $. $$ \left( \color{blue}{5m-2}\right) \cdot \left( 5m-2\right) = 25m^2-10m-10m+4 $$ |
| ② | Combine like terms: $$ 25m^2 \color{blue}{-10m} \color{blue}{-10m} +4 = 25m^2 \color{blue}{-20m} +4 $$ |
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