Evaluate
\left(6m-7n\right)^{2}
Expand
36m^{2}-84mn+49n^{2}
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36m^{2}-84mn+49n^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(6m-7n\right)^{2}.
36m^{2}-84mn+49n^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(6m-7n\right)^{2}.
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