化简求值题:一.5abc-{2a²b-[3abc-(4a²b-a²b)]}; (其中a=1,b=2,c=4分之1)
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![化简求值题:一.5abc-{2a²b-[3abc-(4a²b-a²b)]}; (其中a=1,b=2,c=4分之1)](/uploads/image/z/379726-70-6.jpg?t=%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC%E9%A2%98%3A%E4%B8%80.5abc-%7B2a%26%23178%3Bb-%5B3abc-%284a%26%23178%3Bb-a%26%23178%3Bb%29%5D%7D%3B+%28%E5%85%B6%E4%B8%ADa%3D1%2Cb%3D2%2Cc%3D4%E5%88%86%E4%B9%8B1%EF%BC%89)
化简求值题:一.5abc-{2a²b-[3abc-(4a²b-a²b)]}; (其中a=1,b=2,c=4分之1)
化简求值题:一.5abc-{2a²b-[3abc-(4a²b-a²b)]}; (其中a=1,b=2,c=4分之1)
化简求值题:一.5abc-{2a²b-[3abc-(4a²b-a²b)]}; (其中a=1,b=2,c=4分之1)
5abc-{2a²b-[3abc-(4a²b-a²b)]}
=5abc-2a²b+[3abc-3a²b]
=8abc-5a^2b
=8*1*2*1/4-5*1*2
=4-10
=-6