Question

如果-4x^a y^a+1与mx^5 y^b-1合并同类项后是3x^5 y^n,试求m,n,a,b的值.

Answer 1

解

∴-4x^ay^(a+1)与mx^5y^(b-1)是同类项

∴a=5,a+1=b-1,

-4+m=3,

∴b=7

m=7

∴n=6