1、若单项式3x³y^5次方与﹣4分之1a²b^n-3的次数相同,则-3n-6的值为多少?2、若x²y²+x³-3xy³-mx³y³+8没有六次项,那么m=?
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![1、若单项式3x³y^5次方与﹣4分之1a²b^n-3的次数相同,则-3n-6的值为多少?2、若x²y²+x³-3xy³-mx³y³+8没有六次项,那么m=?](/uploads/image/z/1664491-67-1.jpg?t=1%E3%80%81%E8%8B%A5%E5%8D%95%E9%A1%B9%E5%BC%8F3x%26%23179%3By%5E5%E6%AC%A1%E6%96%B9%E4%B8%8E%EF%B9%A34%E5%88%86%E4%B9%8B1a%26%23178%3Bb%5En-3%E7%9A%84%E6%AC%A1%E6%95%B0%E7%9B%B8%E5%90%8C%2C%E5%88%99-3n-6%E7%9A%84%E5%80%BC%E4%B8%BA%E5%A4%9A%E5%B0%91%3F2%E3%80%81%E8%8B%A5x%26%23178%3By%26%23178%3B%2Bx%26%23179%3B-3xy%26%23179%3B-mx%26%23179%3By%26%23179%3B%2B8%E6%B2%A1%E6%9C%89%E5%85%AD%E6%AC%A1%E9%A1%B9%2C%E9%82%A3%E4%B9%88m%3D%3F)
1、若单项式3x³y^5次方与﹣4分之1a²b^n-3的次数相同,则-3n-6的值为多少?2、若x²y²+x³-3xy³-mx³y³+8没有六次项,那么m=?
1、若单项式3x³y^5次方与﹣4分之1a²b^n-3的次数相同,则-3n-6的值为多少?
2、若x²y²+x³-3xy³-mx³y³+8没有六次项,那么m=?
1、若单项式3x³y^5次方与﹣4分之1a²b^n-3的次数相同,则-3n-6的值为多少?2、若x²y²+x³-3xy³-mx³y³+8没有六次项,那么m=?
若单项式3x³y^5次方与﹣4分之1a²b^n-3的次数相同
则3+5=2+n-3,
∴n=9,
-3n-6=-3*9-6=-33
2、若x²y²+x³-3xy³-mx³y³+8没有六次项,
则mx³y³的系数为0,即m=0