Respuesta :
2x^2 + 9x - 5 = 0
2x^2 + 10x - x - 5 = 0
2x(x + 5) - 1(x + 5) = 0
(2x - 1)(x + 5) = 0
x = 1/2, x = -5
2x^2 + 10x - x - 5 = 0
2x(x + 5) - 1(x + 5) = 0
(2x - 1)(x + 5) = 0
x = 1/2, x = -5