3m(4m-n)-(4n+m)(-4m+n)
(3m-4n)(4n+3m)-(2m-n)(2m+n)
m-{3n-4m+[m-5(m-n)+m]}=______.
【(m+n)(m-n)-(m-n²)+2n(m-n)】÷4n
(4(m-n)^3)/((n-m)^2)
已知2m+n分之m-2n=3,则2m+n分之3(m-2n)+3(2m+n)分之m-2n-4(2m+n)分之5(m-2n)
(5m+2n)(5m-2n)-(3m-4n)(4m+3n)
若|m-n|=n-m,且|m|=4,|n|=3,(m+n)²的值是多少?
若5m-3n=-4,求出2(m-n)+4(2m-n)
2m-{n+[4m-3(m+2n)]}-5n化简求值
2m(m-n)^2-4n(n-m)^3 (分解因式)
因式分解【(m+n)的平方-4(m-n)的平方】÷(3n-m)
(m-n)2(n-m)3(n-m)4化简