Rozwiaz rownanie i nierownosci z wartoscia bezwzgledna.
a) |4x-5|=3
b) |x+2|≤ 4
c) |3x+5|> 7
a) 4x-5=3 ∨ 4x-5=-3
4x=8 ∨ 4x=2
x=2 ∨ x=
x ∈ {1/2,2}
b) x+2 ≤ 4 ∧ x+2≥-4
x≤2 ∧ x≥-6
x∈ <-6, 2>
c) 3x+5>7 ∨ 3x+5<-7
3x>2 ∨3x<-12
x> ∨ x<-4
x∈ (-∞,-4) ( , +∞)
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a) 4x-5=3 ∨ 4x-5=-3
4x=8 ∨ 4x=2
x=2 ∨ x=
x ∈ {1/2,2}
b) x+2 ≤ 4 ∧ x+2≥-4
x≤2 ∧ x≥-6
x∈ <-6, 2>
c) 3x+5>7 ∨ 3x+5<-7
3x>2 ∨3x<-12
x> ∨ x<-4
x∈ (-∞,-4) ( , +∞)