4m²-(m+n)²
(3m-4n)² -2m(m+n)
【(m+n)(m-n)-(m-n²)+2n(m-n)】÷4n
m²n(m-n)-4mn(n-m)
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
先化简再求值:(2m-n)(m+n)+(m-n)²-(6m³-4m²n)÷2m,其中m=2
4m²+p(m+n)²+12m(m+n)分解因式求解
9(m+n)²-4(m-n)²
25(m+n)²-4(m-n)²
若|m-n|=n-m,且|m|=4,|n|=3,(m+n)²的值是多少?
化简m/(m+n)²+n/m²-n²-2n²/(m+n)(m²-n
(m²-6mn+9n²)÷(m-3n)-(4m²-9n²)-(2m-3n)怎么做
化简 m²(m-n)+(n-m)