(2ab²)-²/(a-²b)³

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(2ab²)-²/(a-²b)³
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(2ab²)-²/(a-²b)³
(2ab²)-²/(a-²b)³

(2ab²)-²/(a-²b)³
(2ab²)-²/(a-²b)³
解,得:
==1/(2ab²)²*[1/(a^-6*b³)]
==1/(2ab²)²*[1/(b³/a^6)]
==1/(4a^2b^4)*(a^6/b³)
==a^4/4b^7