Normal
2.đk:x khác -2 bạn chia ra lam 3 TH:+x<1/3: (1-3x)/(x+2)=(3-x)+1/3=<x<3: (3x-1)/(x+2)=(3-x)+3=<x: (3x-1)/(x+2)=(x-3)
2.đk:x khác -2
bạn chia ra lam 3 TH:
+x<1/3: (1-3x)/(x+2)=(3-x)
+1/3=<x<3: (3x-1)/(x+2)=(3-x)
+3=<x: (3x-1)/(x+2)=(x-3)
