Evaluate
30pq+\left(2p-5q\right)^{2}
Expand
4p^{2}+10pq+25q^{2}
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4p^{2}-20pq+25q^{2}+30pq
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(2p-5q\right)^{2}.
4p^{2}+10pq+25q^{2}
Combine -20pq and 30pq to get 10pq.
4p^{2}-20pq+25q^{2}+30pq
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(2p-5q\right)^{2}.
4p^{2}+10pq+25q^{2}
Combine -20pq and 30pq to get 10pq.
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