-3xy/2y^/3x-3xy/[2y^/3x]

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-3xy/2y^/3x-3xy/[2y^/3x]-3xy/2y^/3x-3xy/[2y^/3x]-3xy/2y^/3x-3xy/[2y^/3x]您好：-3xy/[2y^/3x]=-9x²/2

-3xy/2y^/3x-3xy/[2y^/3x]
-3xy/2y^/3x
-3xy/[2y^/3x]

-3xy/2y^/3x-3xy/[2y^/3x]
您好：
-3xy/[2y^/3x]
=-9x²/2y

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