16(2m+n)^2-9(m-2n)^2
m-n+2n^2/(m+n)
(m-n)^2 +n(n- m)
(m-n)+2n(m-n)
(m+2n)-6(m+2n)(2m-n)+9(n-2m) 因式分解
(3m-2n)^+(3m+2n) (3m-2n)-9(m+n)^
16(m+n)^2+40(m+n)(m-n)+25(m-n)^2 怎样因式分解?
若(m-2n)/(2m+n)=3,则[3(m-2n)/(2m+n)-(m-2n)/[2(2m+n)] - {9(m-2n
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
分式加减法:化简:2m/m-n-n/n-m+m+2n/n-m
计算m+2n/n-m+n/m-n-2m/n-m
计算2m-n/n-m+m/m-n+n/n-m
计算:2m-n/n-m+m/m-n+n/n-m