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5-2 I x+1 I = 3
-2 I x+1 I = -2
I x+1 I = 1
x+1=1 v x+1=-1
x=0 v x=-2
b. rozwiaz nierownosc
I 3x+2 I > 3
3x+2>3 v 3x+2<-3
3x>1 v 3x<-5
x>1/3 v x<-5/3
x∈(-∞,-5/3) u (1/3,∞)
I 2x-5 I < 6
-6<2x-5 i 2x-5<6
2x>-1 i 2x<11
x>-1/2 i x<11/2
x∈(-1/2, 11/2)