会几个答几个1、当k=( )时,多项式x的2次方—(3k—4)xy—4y的2次方—8中只含有3个项.2、若(a—1)x的2次方y的b次方是关于x,y的五次单项式,且系数为—2/1,则a=( ),b=( ).3、关于x的多项式
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![会几个答几个1、当k=( )时,多项式x的2次方—(3k—4)xy—4y的2次方—8中只含有3个项.2、若(a—1)x的2次方y的b次方是关于x,y的五次单项式,且系数为—2/1,则a=( ),b=( ).3、关于x的多项式](/uploads/image/z/13294555-43-5.jpg?t=%E4%BC%9A%E5%87%A0%E4%B8%AA%E7%AD%94%E5%87%A0%E4%B8%AA1%E3%80%81%E5%BD%93k%3D%EF%BC%88+%EF%BC%89%E6%97%B6%2C%E5%A4%9A%E9%A1%B9%E5%BC%8Fx%E7%9A%842%E6%AC%A1%E6%96%B9%E2%80%94%EF%BC%883k%E2%80%944%EF%BC%89xy%E2%80%944y%E7%9A%842%E6%AC%A1%E6%96%B9%E2%80%948%E4%B8%AD%E5%8F%AA%E5%90%AB%E6%9C%893%E4%B8%AA%E9%A1%B9.2%E3%80%81%E8%8B%A5%EF%BC%88a%E2%80%941%EF%BC%89x%E7%9A%842%E6%AC%A1%E6%96%B9y%E7%9A%84b%E6%AC%A1%E6%96%B9%E6%98%AF%E5%85%B3%E4%BA%8Ex%2Cy%E7%9A%84%E4%BA%94%E6%AC%A1%E5%8D%95%E9%A1%B9%E5%BC%8F%2C%E4%B8%94%E7%B3%BB%E6%95%B0%E4%B8%BA%E2%80%942%2F1%2C%E5%88%99a%3D%EF%BC%88+%EF%BC%89%2Cb%3D%EF%BC%88+%EF%BC%89.3%E3%80%81%E5%85%B3%E4%BA%8Ex%E7%9A%84%E5%A4%9A%E9%A1%B9%E5%BC%8F)
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