ax²+bx+c = 0

polynôme du second degrés

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ax²+bx+c = 0 by Mind Map: ax²+bx+c = 0

1. Delta > 0

1.1. Deux solutions réelles

1.1.1. x=(-b+sqrt(delta))/2*a

1.1.2. x=(-b-sqrt(delta))/(2*a)

2. Delta = 0

2.1. Une solution réelle

2.1.1. x=-b/2*a

3. Delta < 0

3.1. Deux solutions complexes

3.1.1. x=(-b+i*sqrt(delta))/(2*a)

3.1.2. x=(-b-i*sqrt(delta))/(2*a)

4. Delta = b² - 4*a*c