解下列分式方程:(1)1/(x+3)-2/(3-x)=12/(x^2-9) (2...

Question

解下列分式方程:(1)1/(x+3)-2/(3-x)=12/(x^2-9) (2)x/(x-2)-(x+14)/(x^2-4)=2x/(x+2)-1

Answer 1

1）首先有x^2-9≠0解得x≠3且x≠-3同时乘以（x^2-9）得到’x-3+2(x+3)=12解得x=-3又因为x≠3,所以无解2）首先x^2-4≠0x≠2且x≠-2同时乘以(x^-4)得到x(x+2)-(x+14)=2x(x-1)-(x^2-4)整理得到3x-18=0解得x=6于是x=6为解如有其它问题请采纳此题后点求助,