[-(4m+1)]²-4×2×(2m²-1)怎么算
m²-2m=1 2m²-4m+2010
3(m-1)²+(m+2)(m²-2m+4)-m(m²+3m-3)
m²-4m+4/m²-1÷m-2/m+1+2/m-1,其中m=2
(m+3m+5m+...+2009m)-(2m+4m+...+2008m)怎么算
计算2m+6/m²-4m+4·1/m+3·(m-2)(m+3)/m+3
(6m的平方-4m-3)+(2m的平方-4m+1)怎么算?
化简求值(m+2/m²-2m)-(m-1/m²-4m+4)÷(m-1/m) 其中m=4
解:“(m-2/m+2+4m/m²-4)÷1/4-m²
[-3(m-1)]²-4m(2m-3) 怎么解
(2m+1)(m-4)-(m-2)² 因式分解
化简:2[(m-1)m+m(m+1)][(m-1)m-m(m+1)]
﹙m²+2m﹚²-2m²-4m+1因式分解