(4mn²+3m²n-4m)-2(mn²+3/2m²n+1)化简
(4mn²+3m²n-4m)-2(mn²+3/2m²n+1)化简
规定新运算:m#n=m+n,m﹡n=m-n,试化简[(mn²﹚#(2mn)]+[(4mn²)﹡(3m
(7m²-4mn-n²)-(3m²-mn+2n²)求解
4-m²n²+2mn
(3m-2n)²+24mn
m²n(m-n)-4mn(n-m)
若(2m-n)²=3mn,求代数式n/m+4m/n-1的值
已知m+n+=3,mn=三分之二,求m²+(n-m)²+2m(n-mn)的值
化简(m²/m-n - m+n)÷2m²-mn/n - m
1+n-m÷m²-n² --- ---- m+2n m²+4mn+4n²
1+n-m/m+2n÷m²-n²/m²+4mn+4n²=
2M-N分之3与4M²-4MN+N²分之2MN 通分要详细点