Evaluate
\left(2a+23\right)^{2}
Expand
4a^{2}+92a+529
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\left(23+2a\right)^{2}
The opposite of -2a is 2a.
529+92a+4a^{2}
Use binomial theorem \left(p+q\right)^{2}=p^{2}+2pq+q^{2} to expand \left(23+2a\right)^{2}.
\left(23+2a\right)^{2}
The opposite of -2a is 2a.
529+92a+4a^{2}
Use binomial theorem \left(p+q\right)^{2}=p^{2}+2pq+q^{2} to expand \left(23+2a\right)^{2}.
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