Răspuns :
2x-1/3
2x-1∈[1,-1,3,-3]
1)2x-1=1 2x=2 x=1>0
2)2x-1=-1 2x=0 x=0 care este =0
3)2x-2=3 2x=5 x=5/2>0
4)2x-2=-3 2x=-1 x=-1/2>0 ⇒x∈{1,, 5/2, -1/2}
2x-1∈[1,-1,3,-3]
1)2x-1=1 2x=2 x=1>0
2)2x-1=-1 2x=0 x=0 care este =0
3)2x-2=3 2x=5 x=5/2>0
4)2x-2=-3 2x=-1 x=-1/2>0 ⇒x∈{1,, 5/2, -1/2}