4m(m-n)+4n(n-m)
(3m-4n)(4n+3m)-(2m-n)(2m+n)
【(m+n)(m-n)-(m-n²)+2n(m-n)】÷4n
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
m-{3n-4m+[m-5(m-n)+m]}=______.
(4(m-n)^3)/((n-m)^2)
因式分解:4(m+n)方-9(m-n)方
9(m+n)²-4(m-n)²
25(m+n)²-4(m-n)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)
计算[m+n-4mn/(m+n)]·[m-n+4mn/(m-n)]的正确结果>_
若|m-n|=n-m,且|m|=4,|n|=3,(m+n)²的值是多少?