Expand
25b^{2}-40b+16
Evaluate
\left(5b-4\right)^{2}
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25b^{2}-40b+16
Use binomial theorem \left(p-q\right)^{2}=p^{2}-2pq+q^{2} to expand \left(5b-4\right)^{2}.
25b^{2}-40b+16
Use binomial theorem \left(p-q\right)^{2}=p^{2}-2pq+q^{2} to expand \left(5b-4\right)^{2}.
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