Bonjour,
Question 1 :
u = x² + 3 v = x + 1
u' = 2x v' = 1
Question 2 :
On reconnaît un trinôme du second degré :
P(x) = x² + 2x - 3
Δ = b² - 4ac = 2² - 4 x 1 x (-3) = 4 + 12 = 16
a(x - x₁)(x-x₂) = 1(x - (-3))(x-1) = (x + 3)(x - 1)
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Bonjour,
Question 1 :
u = x² + 3 v = x + 1
u' = 2x v' = 1
Question 2 :
On reconnaît un trinôme du second degré :
P(x) = x² + 2x - 3
Δ = b² - 4ac = 2² - 4 x 1 x (-3) = 4 + 12 = 16
a(x - x₁)(x-x₂) = 1(x - (-3))(x-1) = (x + 3)(x - 1)