ecuaciones de segundo grado (equipo 1)

 

1.- 4x - 4 = 0 x1 = 0 + 8 =1
x = - 0 + 0 + 64 8
8
x = 0 + 64 x2 = 0 - 8 = -1
8 8
x = 0 + 8
8 

2.- x - 5x + 6 = 0 x1 = 5 + 1 = 6 = 3
x = 5 + 5 - 4*1*6 2 2
2
x = 5 + 25 - 24 x2 = 5 - 1 = 4 = 2
2 2 2
x = 5 + 1
2 

3.- (x + 3)(2x − 1) = 9


 (2x − 3)(x + 4) = 0
Si
2x − 3 = 0
2x = 3

Si
x + 4 = 0
x = −4

4.-  − 5x² + 13x + 6 = 0

5.-  x2 − 10x + 21 = 0        a = 1,                b = −10        c = 21