Evaluate
\left(5k-8m\right)^{2}
Expand
64m^{2}-80km+25k^{2}
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25k^{2}-80km+64m^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(5k-8m\right)^{2}.
25k^{2}-80km+64m^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(5k-8m\right)^{2}.
Examples
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