(5/2mn³-mn²+6/1n五次方)/(-2/3n)

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(5/2mn³-mn²+6/1n五次方)/(-2/3n)
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(5/2mn³-mn²+6/1n五次方)/(-2/3n)
(5/2mn³-mn²+6/1n五次方)/(-2/3n)

(5/2mn³-mn²+6/1n五次方)/(-2/3n)
大哥,
6/1n五次方
这是啥意思.