5m^2-4mn+3n^2-2m^2+3mn-4n^2合并同类项
1个回答
5m^2-4mn+3n^2-2m^2+3mn-4n^2
=3m²-mn-n²
相关问题
合并多项式中的同类项:m^3-m^2n+mn^2+m^2n-mn^2+n^3+1
4(-2mn+2m+3n)-2(3m+5n-mn),其中m+n=3,mn=-1
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3m²n+5mn²+6nm²-4n²m-n²m(合并同类项)
已知m-n=3,mn=-3,求(-m-4n-mn)-(2mn-2m-3n)-(3mn+2n-2m)的值
4m^3n-4m^2n^2+mn^3-mn因式分解