bardzo proszę szybką pomoc i rozwiązanie poniższych równań
A
2 (x – 1) + 3 < 4(2x + 3) -1
2x -1 +3 < 8x +12 - 1
2x – 8x < 12 – 1 +1 – 3
- 6x < 9/(-6)
x > -1,5
(12 – 3x)/3 + 5 > (3x – 2)/4 – x /*12
4(12 – 3x) + 60 > 3(3x – 2) – 12x
48 – 12x + 60 > 9x – 6 – 12x
- 12x – 9x + 12x > - 6 - 60 +48
- 9x > - 18/ -9
x < 2
(x – 2)^2 – 3x < x^2 + 18
x^2 – 4x + 4 – 3x < x^2 + 18
x^2 – 4x – 3x – x^2 < 18 – 4
- 7x < 14/-7
x > -2
B
5x + 2(3x – 1) > 3(4x – 3) + 2x
5x + 6x – 2 > 12x – 9 +2x
5x + 6x - 12x - 2x > - 9 + 2
-3x > -7/-3
x < 7/3
x < 2 i 1/3
(4x – 3)/6 + 3 < 3x/2 + 5/8/*24
4(4x – 3) + 72 < 36x + 15
16x – 12 +72 < 36x + 15
16x – 36x < 15 – 72 +12
- 20x < - 45/-20
x > - 2,25
(x - 3)^2 + 5 > x^2 + 8
x^2 – 6x + 9 – 6 + 5 > x^2 + 8
x^2 – 6x – x^2 < 8 – 5 + 6 – 9
- 6x < 0/ -6
x > 0
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A
2 (x – 1) + 3 < 4(2x + 3) -1
2x -1 +3 < 8x +12 - 1
2x – 8x < 12 – 1 +1 – 3
- 6x < 9/(-6)
x > -1,5
(12 – 3x)/3 + 5 > (3x – 2)/4 – x /*12
4(12 – 3x) + 60 > 3(3x – 2) – 12x
48 – 12x + 60 > 9x – 6 – 12x
- 12x – 9x + 12x > - 6 - 60 +48
- 9x > - 18/ -9
x < 2
(x – 2)^2 – 3x < x^2 + 18
x^2 – 4x + 4 – 3x < x^2 + 18
x^2 – 4x – 3x – x^2 < 18 – 4
- 7x < 14/-7
x > -2
B
5x + 2(3x – 1) > 3(4x – 3) + 2x
5x + 6x – 2 > 12x – 9 +2x
5x + 6x - 12x - 2x > - 9 + 2
-3x > -7/-3
x < 7/3
x < 2 i 1/3
(4x – 3)/6 + 3 < 3x/2 + 5/8/*24
4(4x – 3) + 72 < 36x + 15
16x – 12 +72 < 36x + 15
16x – 36x < 15 – 72 +12
- 20x < - 45/-20
x > - 2,25
(x - 3)^2 + 5 > x^2 + 8
x^2 – 6x + 9 – 6 + 5 > x^2 + 8
x^2 – 6x – x^2 < 8 – 5 + 6 – 9
- 6x < 0/ -6
x > 0