化简求值(a=-1,b=1)ab+3a^2b-2ab-4ab^2-0.5ab+4a^2b-3ab^2

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化简求值(a=-1,b=1)ab+3a^2b-2ab-4ab^2-0.5ab+4a^2b-3ab^2化简求值(a=-1,b=1)ab+3a^2b-2ab-4ab^2-0.5ab+4a^2b-3ab^2

化简求值(a=-1,b=1)ab+3a^2b-2ab-4ab^2-0.5ab+4a^2b-3ab^2
化简求值(a=-1,b=1)ab+3a^2b-2ab-4ab^2-0.5ab+4a^2b-3ab^2

化简求值(a=-1,b=1)ab+3a^2b-2ab-4ab^2-0.5ab+4a^2b-3ab^2

ab+3a^2b-2ab-4ab^2-0.5ab+4a^2b-3ab^2
=(ab-2ab-0.5ab)+(3a^2b+4a^2b)-(4ab^2+3ab^2)
=-1.5ab+7a^2b-7ab^2
=1.5+7+7
=15.5