作业帮化简(x^2-1)(x+1)/x^2-x÷(1 +x^2+1/2x)
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/03 02:33:56
化简(x^2-1)(x+1)/x^2-x÷(1 +x^2+1/2x)
化简(x^2-1)(x+1)/x^2-x÷(1 +x^2+1/2x)
化简(x^2-1)(x+1)/x^2-x÷(1 +x^2+1/2x)
（x^2-1)(x+1)/(x^2-x) / (1+x^2+1/2x) =[(x-1)(x+1)/x(x-1)] / [(2x+x^2+1)/2x] =[(x+1)/x)] / [(x+1)^2/2x] =(x+1)/x*2x/(x+1)^2 =2/(x+1)