AIR MATH

Math Question

Prove: The square of the sum of two consecutive integers is odd.
\[
\begin{aligned}
(n+(n+1))^{2} &=(2 n+1)^{2} \\
&\left.=[?] n^{2}+[] n+[]\right] \\
&=2\left([] n^{2}+[] n\right)+1 \\
&=\text { odd }
\end{aligned}
\]

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