Evaluate
-\left(m-2n\right)^{11}
Expand
22nm^{10}-220n^{2}m^{9}+1320n^{3}m^{8}-5280n^{4}m^{7}+14784n^{5}m^{6}+2048n^{11}-11264mn^{10}+28160m^{2}n^{9}-42240m^{3}n^{8}+42240m^{4}n^{7}-29568m^{5}n^{6}-m^{11}
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