Объяснение:
a) x² - 3x +2 <0
D = 9-8 = 1
x ₁ ₂ = (3±1)/2
x₁ = 1, x₂ = 2
(x-1)(x-2) <0
x ∈ (1;2)
г) 2x²-7x+6 >0
D = 49 - 48 = 1
x ₁ ₂ = (7±1)/2
x₁ = 3, x₂ = 4
(x-3)(x-4) >0
x ∈ (-∞;3) ∪ (4; +∞)
Объяснение:
a) x² - 3x +2 <0
D = 9-8 = 1
x ₁ ₂ = (3±1)/2
x₁ = 1, x₂ = 2
(x-1)(x-2) <0
x ∈ (1;2)
г) 2x²-7x+6 >0
D = 49 - 48 = 1
x ₁ ₂ = (7±1)/2
x₁ = 3, x₂ = 4
(x-3)(x-4) >0
x ∈ (-∞;3) ∪ (4; +∞)