解方程(X-2)/(X+3)=1-(2X-13)/(X^2-9)(X+1)/(X-1)+ 4/(X^2-1)=1 1/(2-X)=_数学解答

解方程(X-2)/(X+3)=1-(2X-13)/(X^2-9)
(X+1)/(X-1)+ 4/(X^2-1)=1 1/(2-X)=1/(X-2) - (6-X)/(3X^2-12)

人气：465 ℃　时间：2020-03-23 05:03:23

解答

(X+1)/(X-1)+ 4/(X^2-1)=1 1/(2-X)=1/(X-2) - (6-X)/(3X^2-12)[(X+1)^2+4]/(X^2-1)=1X^2+2X+1+4=X^2-12X=-6X=3分式要检验经检验,成立1/(2-X)=1/(X-2) - (6-X)/(3X^2-12)-1/(X-2)=1/(X-2) - (6-X)/[3(X+2)(X-2)]-2/(X...