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a9444776
@a9444776
July 2022
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335(2;4;6) помогите, пожалуйста!!!
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drakerton
2) x² - 3x -2 = 0
-p = x₁ + x₂ = 3
q = x₁ * x₂ = -2
Корни просто так не подбираются. Решим через дискриминант:
D = 9 + 8 = 17
x₁ =
x₂ =
4) x² - 3x -2 = 0
-p = x₁ + x₂ = 2
q = x₁ * x₂ = -35
x₁ = -5
x₂ = 7
6) x² - 3x -2 = 0
-p = x₁ + x₂ = -5
q = x₁ * x₂ = -36
x₁ = 4
x₂ = -9
Удачи!
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Answers & Comments
-p = x₁ + x₂ = 3
q = x₁ * x₂ = -2
Корни просто так не подбираются. Решим через дискриминант:
D = 9 + 8 = 17
x₁ =
x₂ =
4) x² - 3x -2 = 0
-p = x₁ + x₂ = 2
q = x₁ * x₂ = -35
x₁ = -5
x₂ = 7
6) x² - 3x -2 = 0
-p = x₁ + x₂ = -5
q = x₁ * x₂ = -36
x₁ = 4
x₂ = -9
Удачи!