math!Is too difficult for me. help me!求大神!解答.这是数学题!请回答为什么!

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math!Is too difficult for me. help me!求大神!解答.这是数学题!请回答为什么!
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math!Is too difficult for me. help me!求大神!解答.这是数学题!请回答为什么!
math!Is too difficult for me. help me!求大神!解答.


这是数学题!请回答为什么!

math!Is too difficult for me. help me!求大神!解答.这是数学题!请回答为什么!
由于前面那个多项式的次数是六次,且其后两项都不是六次,
所以这个多项式的第一项必为六次,那么2+(m+1)=6
得出:m=3
第二个单项式的次数也是六次,所以2n+(5-m)=6
解得n=2

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