bonsoir
3 x² + 12 x + 27
α = -12/6 = - 2
β = 12 - 24 + 27 = 15
3 ( x + 2)² + 15
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bonsoir
3 x² + 12 x + 27
α = -12/6 = - 2
β = 12 - 24 + 27 = 15
3 ( x + 2)² + 15