y² + 11y + 24 = 0
D = 11² – 4·24 = 25 = 5²
y₁ = (–11 + 5) / 2 = –3
y₂ = (–11 – 5) / 2 = –8
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y² + 11y + 24 = 0
D = 11² – 4·24 = 25 = 5²
y₁ = (–11 + 5) / 2 = –3
y₂ = (–11 – 5) / 2 = –8