Ejercicios resueltos de Ecuaciones de Segundo Grado (LosPrimores)

x² – 5x + 6 = 0

(x – 3) (x – 2) = 0

x² + x – 1 = 0

(x – 1) (x + 1) = 0

x² – 2x + 1 = 0

(x – 1) (x – 1) = 0

x² – 4x + 4 = 0

(x – 2) (x – 2) = 0

x² – 5x – 84 = 0

(x + 12) (x – 7) = 0