Respuestas

2012-10-11T05:52:33+02:00

1//

x^2 + 7x + 10 = (x+5)(x+2)

x^2 - 5x + 6 = (x-3)(x-2)

x^2 + 3x - 10 = (x+5)(x-2)

2//factor comun

x^2 + bx = x(x+b)

x^3+2xb = x(x^2 + 2b)

ax^2 + 3ax = ax(ax + 3)