化简求值的题本人承认,化简求值(3ab-2b)={3a-(5ab-12b-2a)}其中a+2b=-5.ab=-35(x-2y)^2+(x-2y)-3(x-2y)-(2y-x)^2.其中x=1,y=3/4(3ab-2b)+{3a-(5ab-12b-2a)}其中a+2b=-5.ab=-3
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![化简求值的题本人承认,化简求值(3ab-2b)={3a-(5ab-12b-2a)}其中a+2b=-5.ab=-35(x-2y)^2+(x-2y)-3(x-2y)-(2y-x)^2.其中x=1,y=3/4(3ab-2b)+{3a-(5ab-12b-2a)}其中a+2b=-5.ab=-3](/uploads/image/z/635364-36-4.jpg?t=%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC%E7%9A%84%E9%A2%98%E6%9C%AC%E4%BA%BA%E6%89%BF%E8%AE%A4%2C%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC%283ab-2b%29%3D%7B3a-%285ab-12b-2a%29%7D%E5%85%B6%E4%B8%ADa%2B2b%3D-5.ab%3D-35%EF%BC%88x-2y%29%5E2%2B%28x-2y%29-3%28x-2y%29-%282y-x%29%5E2.%E5%85%B6%E4%B8%ADx%3D1%2Cy%3D3%2F4%283ab-2b%29%2B%7B3a-%285ab-12b-2a%29%7D%E5%85%B6%E4%B8%ADa%2B2b%3D-5.ab%3D-3)
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