Rozwiąż: a) |x+3|=1b) |x+3|>1c) |x+3| </=1 (</= oznacza mniejsze lub równe)
a)
|x+3|=1
x+3=1
x=-2
x+3=-1
x=-4
b)
|x+3|>1
x+3>1
x>-2
x+3<-1
x<-4
x∈(-∞,-4)u(-2,∞)
c)
|x+3|≤1
x+3≤1
x≤-2
x+3≥-1
x≥-4
x∈<-4,-2>
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a)
|x+3|=1
x+3=1
x=-2
x+3=-1
x=-4
b)
|x+3|>1
x+3>1
x>-2
x+3<-1
x<-4
x∈(-∞,-4)u(-2,∞)
c)
|x+3|≤1
x+3≤1
x≤-2
x+3≥-1
x≥-4
x∈<-4,-2>