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Przykłady w załacznikach
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zad 1
3x+1=√2x +2
3x+1=1x+2
3x-1x=2-1
2x=1 /(2)
x=½
zad 4
(x+2)²<(x-7)(x+7)
x²+x+x+2< x²-7²
x²+2x+2<x²-49
x²-x²+2x<-49-2
2x<-51 /(2)
x<- 25 ½
zad 5
5(7x-10)=4(8x+11)+3x
35x-50=32x+44+3x
35x-32x-3x= 44+50
0≠94
zad 6
x+2≤3
x≤3-2
x≤-1
zad 7
1-3x ≤ x-1
3 4
4*(1-3x) ≤ 3*(x-1)
4-12x≤ 3x -3
-12x-3x ≤ -3-4
-15x ≤ - 7 /(-15)
x≤7
15
zad 16
2x+1 = x-1
4*(2x+1) = 3*(x-1)
7x+4=3x-3
7x-3x=-3-4
4x=-7 /(4)
x=-1¾
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zad 1
3x+1=√2x +2
3x+1=1x+2
3x-1x=2-1
2x=1 /(2)
x=½
zad 4
(x+2)²<(x-7)(x+7)
x²+x+x+2< x²-7²
x²+2x+2<x²-49
x²-x²+2x<-49-2
2x<-51 /(2)
x<- 25 ½
zad 5
5(7x-10)=4(8x+11)+3x
35x-50=32x+44+3x
35x-32x-3x= 44+50
0≠94
zad 6
x+2≤3
x≤3-2
x≤-1
zad 7
1-3x ≤ x-1
3 4
4*(1-3x) ≤ 3*(x-1)
4-12x≤ 3x -3
-12x-3x ≤ -3-4
-15x ≤ - 7 /(-15)
x≤7
15
zad 16
2x+1 = x-1
3 4
4*(2x+1) = 3*(x-1)
7x+4=3x-3
7x-3x=-3-4
4x=-7 /(4)
x=-1¾