Ответ:
=================
x² + 6x + 9 = 0
по т. Виета
x₁ + x₂ = -6
x₁ * x₂ = 9
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Ответ:
=================
x² + 6x + 9 = 0
по т. Виета
x₁ + x₂ = -6
x₁ * x₂ = 9
=================