Question
Answer
$$(2+10)^2+(7+2)^2=225$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}(2+10)^2+(7+2)^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}12^2+9^2 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}144+81 \xlongequal{ } \\[1 em] & \xlongequal{ }225\end{aligned} $$ | |
| ① | Combine like termsCombine like terms |
| ② | $ 12 ^ 2 = 144 $$ 9 ^ 2 = 81 $ |
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