先化简,再求值:2(a^2b+ab^2)-(2ab^2-1+a^2b))-2

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先化简,再求值:2(a^2b+ab^2)-(2ab^2-1+a^2b))-2先化简,再求值:2(a^2b+ab^2)-(2ab^2-1+a^2b))-2先化简,再求值:2(a^2b+ab^2)-(2a

先化简,再求值:2(a^2b+ab^2)-(2ab^2-1+a^2b))-2
先化简,再求值:2(a^2b+ab^2)-(2ab^2-1+a^2b))-2

先化简,再求值:2(a^2b+ab^2)-(2ab^2-1+a^2b))-2
原式=2a^2b+2ab^2-2ab^2+1-a^2b-2
=2a^2b-a^2b+2ab^2-2ab^2-1
=a^2b-1

2(a^2b+ab^2)-(2ab^2-1+a^2b))-2
=2a^2b+2ab^2-2ab^2+1-a^2b-2
=a^2b-1