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b) |5-x|+ |x+5| dla x ∈ <10,+∞)
c) |x+3|=5
d) |4x-1|<2
e) |x+6|≥4
a. -(2-3√2) + 4+5√2 =
= -2 +3√2 + 4 + 5√2 =
= 2 + 8√2
b. -(5-x) + x +5 =
= -5+x+x+5 = 2x
c. x+3=5 ∨ x+3 = -5
x=2 ∨ x=-8
d. 4x-1<2 ∨ 4x-1>-2
4x<3 / :4 ∨ 4x>-1 / :4
x<3/4 ∨ x>-1/4
x∈(-1/4;3/4)
e. x+6≥4 ∨ x+6≤-4
x≥-2 ∨ x≤-10
x∈(-∞;-2> ∨ <-10;+∞)