-9m²n+27mn²-18mn 因式分解

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-9m²n+27mn²-18mn因式分解-9m²n+27mn²-18mn因式分解-9m²n+27mn²-18mn因式分解-9mn(m-3n+

-9m²n+27mn²-18mn 因式分解
-9m²n+27mn²-18mn 因式分解

-9m²n+27mn²-18mn 因式分解
-9mn(m-3n+2)

-9mn(m-3n+2)

-9m²n+27mn²-18mn =-9mn(m-3n+2)