不要复制,其他答案好像是错的,我才提问的.1、若a大于0,ab小于0,则a-b的绝对值+1-(a-b+2)的值是( )若A和B都是五次多项式,则A+B一定是A.5次多项式B4次多项式C.次数不低于5的多项式D.次数不高
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![不要复制,其他答案好像是错的,我才提问的.1、若a大于0,ab小于0,则a-b的绝对值+1-(a-b+2)的值是( )若A和B都是五次多项式,则A+B一定是A.5次多项式B4次多项式C.次数不低于5的多项式D.次数不高](/uploads/image/z/15164592-24-2.jpg?t=%E4%B8%8D%E8%A6%81%E5%A4%8D%E5%88%B6%2C%E5%85%B6%E4%BB%96%E7%AD%94%E6%A1%88%E5%A5%BD%E5%83%8F%E6%98%AF%E9%94%99%E7%9A%84%2C%E6%88%91%E6%89%8D%E6%8F%90%E9%97%AE%E7%9A%84.1%E3%80%81%E8%8B%A5a%E5%A4%A7%E4%BA%8E0%2Cab%E5%B0%8F%E4%BA%8E0%2C%E5%88%99a-b%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%2B1-%EF%BC%88a-b%2B2%EF%BC%89%E7%9A%84%E5%80%BC%E6%98%AF%EF%BC%88+%EF%BC%89%E8%8B%A5A%E5%92%8CB%E9%83%BD%E6%98%AF%E4%BA%94%E6%AC%A1%E5%A4%9A%E9%A1%B9%E5%BC%8F%2C%E5%88%99A%2BB%E4%B8%80%E5%AE%9A%E6%98%AFA.5%E6%AC%A1%E5%A4%9A%E9%A1%B9%E5%BC%8FB4%E6%AC%A1%E5%A4%9A%E9%A1%B9%E5%BC%8FC.%E6%AC%A1%E6%95%B0%E4%B8%8D%E4%BD%8E%E4%BA%8E5%E7%9A%84%E5%A4%9A%E9%A1%B9%E5%BC%8FD.%E6%AC%A1%E6%95%B0%E4%B8%8D%E9%AB%98)
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