Respuesta :

 x2 + 4x - 5 = (x + 5)(x - 1)
5x2 - 8x + 3 = (x - 1)(5x - 3)
so 
x2 + 4x - 5 / 5x2 - 8x + 3
= [
(x + 5)(x - 1)] / [(x - 1)(5x - 3)]
= (x + 5) / (5x - 3)

answer
(x + 5) / (5x - 3)