-{2a²b-[3abc-(4ab²-a²b)]}
=-[2a²b-(3abc-4ab²+a²b)]
=-(2a²b-3abc+4ab²-a²b)
=-(a²b-3abc+4ab²)
=-a²b+3abc-4ab²
数学一个化简,在线等待,非诚勿扰,就一个化简,要过程!
-{2a²b-[3abc-(4ab²-a²b)]}
=-[2a²b-(3abc-4ab²+a²b)]
=-(2a²b-3abc+4ab²-a²b)
=-(a²b-3abc+4ab²)
=-a²b+3abc-4ab²