1)
2x — 4 > 6
X€(5;∞)
2x + 3 ≤ 1
(-∞-1]
7x — 7 > — 7
(0;∞)
10x — 20 > 30
(5;∞)
25x — 50 ≤ 25
(-∞;3]
4(x — 2) > 2(x + 2)
(6;∞)
10(x — 4) ≥ 8(x + 2)
[28;∞)
2(x — 3) > 4(x + 3)
(-∞;-9)
5(x — 2) ≤ 7(x — 3)
[5.5;∞)
2)
x(x — 5) > 0
(-∞;0)U(5;∞)
x(2x — 6) > 0
(-∞;0)U(3;∞)
(2x — 4)(3x + 3) > 0
(-∞;-1)U(2;∞)
(8x + 8)(4x — 4) < 0
(-1;1)
x(x + 2)(x — 5) ≤ 0
[-2;0]U[5:∞)
(x — 5)(x — 1)(x + 2) > 0
(-2;1)U(5;∞)
(2x — 4)(4x + 4)(5x + 20) > 0
(-4;-1)U(2;∞)
3)
(x — 4)/(x + 3) > 0
(-∞;-3)U(4;∞)
(x — 9)/(x + 2) ≥ 0
(-∞;-2)U[9;∞)
(x — 3)/(x + 8) > 0
(-∞;-8)U(3;∞)
(x + 3)/(x — 3) ≤ 0
[-3;3)
