化简m²-4/2m+m²
化简m²-4/2m+m²
化简(m*m-2m)/(4-m*m)
m²-4m+4/m²-1÷m-2/m+1+2/m-1,其中m=2
计算2m+6/m²-4m+4·1/m+3·(m-2)(m+3)/m+3
化简(m²/m-2 + 4/2-m)÷(m+2)
化简.下题2m²-[6m-﹙2m-1﹚]-3﹙m²-m-4﹚
m³+2m²=m+m² m(m²+m)+m²拆开后应为m³+
化简求值(m+2/m²-2m)-(m-1/m²-4m+4)÷(m-1/m) 其中m=4
化简:(m-1)+2(m²-3m)-(2-m+5m²)
化简(m²/m-n - m+n)÷2m²-mn/n - m
m²+4m-3m²-5m+6m²-2
已知m>4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3|