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l+m^2sqrt((x^l^2)/(x^m^2)) + n^2sqrt((x^m^2)/(x^n^2)) + l^2*sqrt((x^n^2)/(x^l^2))
l+m^2sqrt((x^l^2)/(x^m^2)) + n^2sqrt((x^m^2)/(x^n^2)) + l^2*sqrt((x^n^2)/(x^l^2))
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