解方程:1/x+1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)=0_数学解答

解方程:1/x+1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+……+1/(x+9)(x+10)=0

人气：462 ℃　时间：2020-02-04 08:29:09

解答

1/x+1/x-1/(x+1)+1/(x+1)-1/(x+2)+.+1/(x+9)-1/(x+10)=0
2/x-1/(x+10)=0
2(x+10)-x=0
x=-20是不是跳了很多步啊？怎么做的不懂，能讲解一下吗？1/x(x+1)=1/x-1/(x+1)你想办法看懂这步