Expand
81b^{2}-90b+25
Evaluate
\left(9b-5\right)^{2}
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81b^{2}-90b+25
Use binomial theorem \left(p-q\right)^{2}=p^{2}-2pq+q^{2} to expand \left(9b-5\right)^{2}.
81b^{2}-90b+25
Use binomial theorem \left(p-q\right)^{2}=p^{2}-2pq+q^{2} to expand \left(9b-5\right)^{2}.
Examples
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Matrix
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