Expand
a^{2}-84a+1764
Evaluate
\left(a-42\right)^{2}
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a^{2}-84a+1764
Use binomial theorem \left(p-q\right)^{2}=p^{2}-2pq+q^{2} to expand \left(a-42\right)^{2}.
a^{2}-84a+1764
Use binomial theorem \left(p-q\right)^{2}=p^{2}-2pq+q^{2} to expand \left(a-42\right)^{2}.
Examples
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