(m*m-3m+2)-(4m-2n-1)初一数学题(1)(m*m-3m+2)-(4m-2n-1) (2)(3+x2+4x-1)-3(x2+3x) (3)-5(x2-3)-2(3x2+5)(4)-(x2 y+3xy-4)+3(x2 y-xy+2) (5)(11/2 x2-29x+10y)-(5/2x2-13x+24y) (6)-1/4(2k3+4k2-28)+1/2(k3-2k2+4k) 在字母后的是次方

(1),(-m-n)(-m+n) (2),(-m+n)(m-n) [(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= 4m(m-m)-2n(n-m) 计算:(2m+1)(2m-1)-m·(3m-2) ；因式分解:n^2(m-2)+4(2-m) 化简：[3m^(n+4)+2m^(n+1)]/[3m^(n-1)]-[m^3-1/3][m^3+3] -5m(-m+3n)+4m(-4m-5/2n),其中m=2,n=-1 (m-2n)^2+(3m-n)(2m+2n)-(2m+n)(2m-n) 已知m+n=4 mn=1 已知m＞4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3| (m-2n)(2n+m)-(-3m-4n)(4n-3m)= （3m-4n）（4n+3m)-（2m-n）（2m+n) [2(m+n)^5-3(m+n)^4+(-m-n)^3]÷[2(m+n)^3] 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),