(1/x+1)-(1/x+2)-(1/x-3)+(1/x-4)=?算式我写错了 ,括号打错了应该是1/(x+1)-1/(x+2)-_数学解答

(1/x+1)-(1/x+2)-(1/x-3)+(1/x-4)=?
算式我写错了 ,括号打错了应该是1/(x+1)-1/(x+2)-1/(x-3)+1/(x-4)

人气：464 ℃　时间：2020-06-16 02:23:33

解答

(1/x+1)-(1/x+2)-(1/x-3)+(1/x-4)
=1/x+1-1/x-2-1/x+3+1/x-4
=-2