Respuestas
Solución
Resolver ecuaciones factorizando
1.1 1.2 1.3
x² - 9x = 0 v² + 7v + 6 = 0 2x² - 5x - 3 = 0
x(x + 9) = 0 (v + 1)(v + 6) = 0 2x² + x - 6x - 3 = 0
X = 0 X = -9 V = -1 V = -6 x(2x + 1) - 3 (2x + 1) = 0
(2x + 1)(x - 3) = 0
X = -1/2 X = 3
Resolver ecuación completando cuadrados
2.1 2.2
x² + 4x = 21 3x² + x - 1/2 = 0
x² + 4x - 21 = 0 X = X =
(x - 3)(x + 7) = 0
X = 3 X = -7