3m-4(2mn-2n+4m)-2(7n+5m)化简,
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3m-4(2mn-2n+4m)-2(7n+5m)化简,3m-4(2mn-2n+4m)-2(7n+5m)化简,3m-4(2mn-2n+4m)-2(7n+5m)化简,
3m-4(2mn-2n+4m)-2(7n+5m)化简,
3m-4(2mn-2n+4m)-2(7n+5m)化简,
3m-4(2mn-2n+4m)-2(7n+5m)化简,
已知m-n=3,mn=1,求多项式.(﹣2mn+2m+3n)-(3mn+2n-2m)-(m+4n+m
(3m-5n+4mn)-(2m-4n+6mn)其中m-n=7,mn=-5
已知 m-n=4,mn=-1 .求(-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值
m-n=7 mn=-5求(3m+5n+4mn)-(2n-4n+6mn)
若(2m-n)²=3mn,求代数式n/m+4m/n-1的值
2m(m-n)^2-4n(n-m)^3 (分解因式)-7m(m-n)^3+21mn(n-m)^2 (分解因式)快
若m-n=4,mn=-1,求(-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)
已知m-n=4,mn=-1,求(-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值.
mn-4分之2m-mn,其中m=2,n=-3
若m+n=2,mn=-3,则(m-n)=
分解因式:-4m^2n^3+12m^3n^2-2mn
3m-4(2mn-2n+4m)-2(7n+5m)化简,
这题是怎么因式分解的4m^4n-2m^3n^2-2m^2n^3=2m^2n(2m^2-mn-n^2)=2m^2n(2m+n)(m-n)
[(m+n)^2-4mn][(m-n)^2+4mn]+2(mn)^2.
先化简,再求值!(m-n-(4mn)/(n-m))(m+n-(4mn)/(m+n)),其中m=根号3,n=2
(m-n)(m^5+m^4n+m^3n^2+m²n^3+mn^4+n^5)
已知m-n=4,mn=1,则(2m+3n-2mn)-(m+4n)-(3mn+2n-2m)=_____
(7m²-4mn-n²)-(3m²-mn+2n²)求解