[-(m-1)]^2-4m（m-1)≥0

[-(m-1)]^2-4m（m-1)≥0 已知m＞4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3| (m+1)(m-1)(m-2)(m-4) (1m+3m+5m+...+2009m)-(2m+4m+6m+...=2008m) 化简2[（m-1)m+m(m+1)]乘【(m-1)m-m(m+1)) m²-4m+4/m²-1÷m-2/m+1+2/m-1,其中m=2 已知m>4,化简:|m-4|+|7-2m|+|m^2-2m+1|-|m^2-2m-3| 化简,:3(m-1)^2+(m+2)(m^2-2m+4)-m(m^2+3m-3) 计算2m+6/m²-4m+4·1/m+3·（m-2)(m+3)/m+3 若m*m-3m+1=0,求分式2m*m+2\m*m的值, 已知m-(1/m)+1=0,求(m^4+1)/m^2的值是多少? m^2+√10m+1=0 求m^4+m^-4