1) |x| = 7
x = ±7
x₁ = 7
x₂ = -7
2) |х + 2| = 3
x + 2 = ±3
x₁ + 2 = 3
x₁ = 1
x₂ + 2 = -3
x₂ = -5
3) |x - 3| = 0
x - 3 = 0
x = 3
4) |x + 4| = -3
модуль не может быть отрицательным. x ∈ ∅
5) |x| + 3 = 9
|x| = 6
x = ±6
x₁ = 6
x₂ = -6
6) |x| - 1 = -5
|x| = -4
7) 2|x| - 5 = 0
2|x| = 5
|x| = 2,5
x = ±2,5
x₁ = 2,5
x₂ = -2,5
8) 5|x| + 1 = 0
5|x| = -1
|x| = -0,2
9) |5х + 3| - 3 = 0
|5x + 3| = 3
5x + 3 = ±3
5x₁ + 3 = 3
5x₁ = 0
x₁ = 0
5x₂ + 3 = -3
5x₂ = -6
x₂ = -1,2
10) |3х - 2| + 5 = 7
|3x - 2| = 2
3x - 2 = ±2
3x₁ - 2 = 2
3x₁ = 4
x₁ = 4/3
3x₂ - 2 = -2
3x₂ = 0
x₂ = 0
1) |x| = 7
x = ±7
x₁ = 7
x₂ = -7
2) |х + 2| = 3
x + 2 = ±3
x₁ + 2 = 3
x₁ = 1
x₂ + 2 = -3
x₂ = -5
3) |x - 3| = 0
x - 3 = 0
x = 3
4) |x + 4| = -3
модуль не может быть отрицательным. x ∈ ∅
5) |x| + 3 = 9
|x| = 6
x = ±6
x₁ = 6
x₂ = -6
6) |x| - 1 = -5
|x| = -4
модуль не может быть отрицательным. x ∈ ∅
7) 2|x| - 5 = 0
2|x| = 5
|x| = 2,5
x = ±2,5
x₁ = 2,5
x₂ = -2,5
8) 5|x| + 1 = 0
5|x| = -1
|x| = -0,2
модуль не может быть отрицательным. x ∈ ∅
9) |5х + 3| - 3 = 0
|5x + 3| = 3
5x + 3 = ±3
5x₁ + 3 = 3
5x₁ = 0
x₁ = 0
5x₂ + 3 = -3
5x₂ = -6
x₂ = -1,2
10) |3х - 2| + 5 = 7
|3x - 2| = 2
3x - 2 = ±2
3x₁ - 2 = 2
3x₁ = 4
x₁ = 4/3
3x₂ - 2 = -2
3x₂ = 0
x₂ = 0