Rozwiąż nierówności.
a)
|x|≤
b)
|x+1|≥
|x|≤√(4-2√2)²+√(4-3√2)²
|x|≤|4-2√2|+|4-3√2|
|x|≤4-2√2-4+3√2
|x|≤√2
x≤√2 i x≥-√2
x∈<-√2;√2>
|x+1|≥√(3-2√3)²-√(2√3-2)²
|x+1|≥|3-2√3|-|2√3-2|
|x+1|≥2√3-3-(2√3-2)
|x+1|≥2√3-3-2√3+2
|x+1|≥-1
x∈R
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a)
|x|≤√(4-2√2)²+√(4-3√2)²
|x|≤|4-2√2|+|4-3√2|
|x|≤4-2√2-4+3√2
|x|≤√2
x≤√2 i x≥-√2
x∈<-√2;√2>
b)
|x+1|≥√(3-2√3)²-√(2√3-2)²
|x+1|≥|3-2√3|-|2√3-2|
|x+1|≥2√3-3-(2√3-2)
|x+1|≥2√3-3-2√3+2
|x+1|≥-1
x∈R