rozwiąż i zaznacz na osi liczboweja) |4x-2|> 8b) |3- 7x|11
a)
|4x-2|> 8
4x-2>8
4x>10
x>5/2
4x-2<-8
4x<-6
x<-3/2
rys. 1
b)
|3-7x|≤11
3-7x≤11
-7x≤8
x≥8/7
3-7x≥-11
-7x≥-14
x≤2
rys. 2
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a)
|4x-2|> 8
4x-2>8
4x>10
x>5/2
4x-2<-8
4x<-6
x<-3/2
rys. 1
b)
|3-7x|≤11
3-7x≤11
-7x≤8
x≥8/7
3-7x≥-11
-7x≥-14
x≤2
rys. 2