bjr
on développe à gauche
12x² - 32x - 9x + 24 = - 6
12x² - 41x + 30 = 0
Δ = (-41)² - 2*12*30 = 961 = 31²
x' = (41 + 31)/24 = 3
x'' = (41 - 31)/24 = 5/12
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bjr
on développe à gauche
12x² - 32x - 9x + 24 = - 6
12x² - 41x + 30 = 0
Δ = (-41)² - 2*12*30 = 961 = 31²
x' = (41 + 31)/24 = 3
x'' = (41 - 31)/24 = 5/12