Expand
4b^{2}-12bg+9g^{2}
Evaluate
\left(3g-2b\right)^{2}
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9g^{2}-12gb+4b^{2}
Use binomial theorem \left(p-q\right)^{2}=p^{2}-2pq+q^{2} to expand \left(3g-2b\right)^{2}.
9g^{2}-12gb+4b^{2}
Use binomial theorem \left(p-q\right)^{2}=p^{2}-2pq+q^{2} to expand \left(3g-2b\right)^{2}.
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