ПОМОГИТЕ ПОЖАЛУЙСТА!Найдите x1 и x2 и все с решением
Да обалдеть как много
Ответ:
Пошаговое объяснение:
1.
x² + 7x + 10 = 0
D = 49 - 40 = 9
x₁ = = -2
x₂ = = -5
2.
x² - x - 20 = 0
D = 1 + 80 = 81
x₁ = = 5
x₂ = = -4
3.
x² + 6x - 7 = 0
D = 36 + 28 = 64
x₁ = = 1
x₂ = = -7
4.
x² + 11x + 24= 0
D = 121 - 96 = 25
x₁ = = -3
x₂ = = -8
5.
x² + 17x + 70 = 0
D = 289 - 280 = 9
x₁ = = -7
x₂ = = -10
6.
x² - 7x - 30 = 0
D = 49 + 120 = 169
x₁ = = 10
x₂ = = -3
7.
x² + 10x - 11 = 0
D = 100 + 44 = 144
x₂ = = -11
8.
x² + x - 12 = 0
D = 1 + 48 = 49
x₁ = = 3
9.
x² +11x + 28 = 0
D = 121 - 112 = 9
x₁ = = -4
10.
x² - 4x -21 = 0
D = 16 +84 = 100
x₁ = = 7
x₂ = = 3
11.
x² + 4x + 3 = 0
D = 16 - 12 = 4
x₁ = = -1
12.
x² + 7x - 18 = 0
D = 49 + 72 = 121
x₁ = = 2
x₂ = = -9
13.
x² + 6x + 5 = 0
D = 36 - 20 = 16
14.
x² - 9x + 14 = 0
D = 81 - 56 = 25
x₂ = = 2
15.
x² + 13x +42 = 0
D = 169 - 168 = 1
x₁ = = -6
16.
x² + 2x -3 = 0
D = 4 + 12 = 16
17.
x² - x - 12 = 0
D = 1 +48 = 49
x₁ = = 4
18.
x² + 12x + 35 = 0
D = 144 - 140 = 4
x₁ = = -5
19.
x² - 10x + 21 = 0
D = 100 - 84 = 16
20.
x² - x - 30 = 0
D = 1 + 120 = 121
x₁ = = 6
x₂ = = 5
21.
x² - 9x + 20 = 0
D = 81 - 80 = 161
x₁ = = 11
x₂ = = -2
22.
x² - 11x + 24 = 0
D = 121 -96 = 25
x₁ = = 8