若1/2a²b+M=1/2ab(N+2b),则M=_____,N=_____
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若1/2a²b+M=1/2ab(N+2b),则M=_____,N=_____
若1/2a²b+M=1/2ab(N+2b),则M=_____,N=_____
若1/2a²b+M=1/2ab(N+2b),则M=_____,N=_____
1/2a²b+M=1/2ab(N+2b)=1/2abN+ab^2
所以M=ab^2,N=a