Evaluate
\left(a+5\right)^{2}
Expand
a^{2}+10a+25
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\left(5+a\right)^{2}
Multiply 5+a and 5+a to get \left(5+a\right)^{2}.
25+10a+a^{2}
Use binomial theorem \left(p+q\right)^{2}=p^{2}+2pq+q^{2} to expand \left(5+a\right)^{2}.
\left(5+a\right)^{2}
Multiply 5+a and 5+a to get \left(5+a\right)^{2}.
25+10a+a^{2}
Use binomial theorem \left(p+q\right)^{2}=p^{2}+2pq+q^{2} to expand \left(5+a\right)^{2}.
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