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