关于X,Y的多项式6mx²+4nxy+2+2xy-x²+y+4不含二次项,求多项式2m²n+10m-4n+2-2m²n-4m+2n

关于X,Y的多项式6mx²+4nxy+2+2xy-x²+y+4不含二次项,求多项式2m²n+10m-4n+2-2m²n-4m+2n
关于X,Y的多项式6mx²+4nxy+2+2xy-x²+y+4不含二次项,求多项式2m²n+10m-4n+2-2m²n-4m+2n

关于X,Y的多项式6mx²+4nxy+2+2xy-x²+y+4不含二次项,求多项式2m²n+10m-4n+2-2m²n-4m+2n
首先把多项式合并
(6m-1)x^2+(4n+2)xy+y+6
所以
6m-1=0
4n+2=0
解得m=1/6,n=-1/2
2m²n+10m-4n+2-2m²n-4m+2n
=6m-2n+2
=1+1+2
=4

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由题意可得，6m-1=0，4n+2=0求出m,n