2m^2(-3m^2n+4m^3n^2)-(1/2m^2)^2(4n-mn^2)

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2m^2*(-3m^2n+4m^3n^2)-(1/2m^2)^2*(4n-mn^2)2m^2*(-3m^2n+4m^3n^2)-(1/2m^2)^2*(4n-mn^2)2m^2*(-3m^2n+4m^

2m^2*(-3m^2n+4m^3n^2)-(1/2m^2)^2*(4n-mn^2)
2m^2*(-3m^2n+4m^3n^2)-(1/2m^2)^2*(4n-mn^2)

2m^2*(-3m^2n+4m^3n^2)-(1/2m^2)^2*(4n-mn^2)
原式=-6m^4n+8m^5n^2-(1/4m^4)(4n-mn^2)
=-6m^4n+8m^5n^2-m^4n+1/4m^5n^2
=-7m^4n+33/4m^5n^2

a(a-1)+(b-a²)=-7
a²-a+b-a²=-7
b-a=-7
(a²+b²)/2-ab
=(b²-2ab+a²)/2
=(b-a)²/2
=(-7)²/2
=49/2

[(m-n)^2*(m-n)^3]^2/(m-n)^4 [(m-n)^2*(m-n)^3]^2/(m-n)^4 4m(m-n)^2+4n(n-m)^3 （m-n)2(n-m)3(n-m)4化简已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2= [2(m+n)^5-3(m+n)^4+(-m-n)^3]÷[2(m+n)^3] (m-2n)(2n+m)-(-3m-4n)(4n-3m)= （3m-4n）（4n+3m)-（2m-n）（2m+n) 计算(m+4n)(m-n)-6(m+2n)(m-3n) （m+4n)(m-n)-6(m+2n)(m-3n) （m+4n)(m-n)-6(m+2n)(m-3n), 3m(m-n)-2n(m-n)的平方因式分解(n-m)^3(m-n)^2-(m-n)^5 （n-m)^3×(m-n)^2-(m-n)^5 计算(m+n)^3-(n+m)(m-n)^2 (m-n)^3(n-m)^2(m-n)=_____ 2(m+n)2-(m+n)+4(m+n)-(m+n)2+3(m+n)2 化简求值 2(m+n)2²-(m+n)+4(m+n)-(m+n)²+3(m+n)² 计算