Evaluate
\left(a+3\right)^{3}
Expand
a^{3}+9a^{2}+27a+27
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27+27a+9a^{2}+a^{3}
Use binomial theorem \left(p+q\right)^{3}=p^{3}+3p^{2}q+3pq^{2}+q^{3} to expand \left(3+a\right)^{3}.
27+27a+9a^{2}+a^{3}
Use binomial theorem \left(p+q\right)^{3}=p^{3}+3p^{2}q+3pq^{2}+q^{3} to expand \left(3+a\right)^{3}.
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