x² + 9x + p = 0
x₁ = - 5
x₁ + x₂ = - 9
x₂ = - 9 - x₁ =- 9 - (- 5) = - 9 + 5 = - 4
p = x₁ * x₂ = - 5 * (- 4) = 20
Ответ : x₂ = - 4 ; p = 20
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Verified answer
x² + 9x + p = 0
x₁ = - 5
x₁ + x₂ = - 9
x₂ = - 9 - x₁ =- 9 - (- 5) = - 9 + 5 = - 4
p = x₁ * x₂ = - 5 * (- 4) = 20
Ответ : x₂ = - 4 ; p = 20